LM5176PWPR

Texas Instruments

-40℃~+125℃@(TJ) 1 4.2V~55V 600kHz 800mV~55V Adjustable Boost、Buck Buck-Boost Yes HTSSOP-28-EP DC-DC Converters ROHS

Extended

Category: DC DC Converters
Package: HTSSOP-28-EP
Pins: 29

Overview

The LM5176PWPR is a DC DC Converter made by Texas Instruments in a HTSSOP-28-EP package with 29 pins. -40℃~+125℃@(TJ) 1 4.2V~55V 600kHz 800mV~55V Adjustable Boost、Buck Buck-Boost Yes HTSSOP-28-EP DC-DC Converters ROHS.

PCBKit's library has its KiCad symbol (Regulator_Switching:LM5176PWP, from KiCad's library) and its footprint (Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm, from KiCad's library), ready for a KiCad board. 5,148 are in stock at JLCPCB (part C442493). 6 open-source boards in 6 repositories on GitHub use it.

Symbol

Regulator_Switching:LM5176PWPFrom KiCad's library

Footprint

Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mmFrom KiCad's library

From the datasheet

Supply, least: 4.2 V · VIN, recommended operating min · p. 5
Supply, most: 55 V · VIN, recommended operating max · p. 5
Supply, least: 2.5 V · VISNS, input power stage with external bias, recommended min · p. 5
Supply, least: 8 V · BIAS, VCC in regulation, recommended min · p. 5
Supply, most: 36 V · BIAS, VCC in regulation, recommended max · p. 5
Supply, absolute maximum: 60 V · VIN, absolute max · p. 5
Supply, absolute maximum: 40 V · BIAS, absolute max · p. 5
Junction, hottest: 150 °C · Operating junction temperature, absolute max · p. 5
Takes working: 2 mA · VIN operating current, typical, VEN/UVLO = 2 V, VFB = 0.9 V · p. 6
Takes at most: 4 mA · VIN operating current, max, VEN/UVLO = 2 V, VFB = 0.9 V · p. 6
Takes asleep: 2.6 µA · VIN shutdown current, typical, VEN/UVLO = 0 V · p. 6
Feedback reference: 800 mV · Feedback reference voltage, typical, FB = COMP · p. 6
Switches at: 200 kHz · Switching frequency 1, typical, RT = 40 kΩ · p. 6
Switches at: 390 kHz · Switching frequency 2, typical, RT = 20 kΩ · p. 6
Junction to air (PWP (HTSSOP)): 32.6 K/W · Junction-to-ambient thermal resistance · p. 6
Junction to board (PWP (HTSSOP)): 8.2 K/W · Junction-to-board thermal resistance · p. 6
Junction to case (PWP (HTSSOP)): 21.4 K/W · Junction-to-case (top) thermal resistance · p. 6

What it is and has

Topology: Single inductor buck-boost controller for step-up/step-down DC/DC conversion · p. 1
Output voltage range: 0.8 V to 55 V · p. 1
Gate drivers: Integrated 2-A MOSFET gate drivers · p. 1
Switching frequency: Adjustable · p. 1
Synchronization and dithering: Optional frequency sync and dithering · p. 1
Protection: VOUT short protection · p. 1
Protection: Cycle-by-cycle current limit and optional hiccup · p. 1
Current limiting: Optional input or output average current limiting · p. 1
Startup: Programmable input UVLO and soft start · p. 1
Monitoring and protection: Power Good and output overvoltage protection · p. 1
Package options: HTSSOP-28 and QFN-28 · p. 1
Functional safety: Functional Safety-Capable · p. 1

Around it

res 93.1 kΩ: between MODE and AGND; Selects CCM with hiccup enabled. · p. 3
res 200 kΩ: between MODE and AGND; Selects CCM with hiccup disabled; alternatively connect MODE to VCC. · p. 3
res 2-kΩ: between Input power stage rail and VISNS; Required in series with VISNS when input voltage is higher than 40 V. · p. 17
res 27.4 kΩ: between RT/SYNC and AGND; Example frequency-setting resistor, 1% tolerance, for 300 kHz switching. · p. 22
res 8 mΩ: between CS and CSG; Example current-sense resistor selected for boost operation; a 2-W rating is sufficient for this application. · p. 24
cap 0.1 µF: between SS and AGND; Example soft-start capacitor giving a soft-start time of 16 ms. · p. 25
res 0-Ω: between DITH and AGND; Disables frequency dithering in the example design. · p. 25

Specifications

Parameter	Conditions	As printed	Page
VIN, EN/UVLO, VISNS, VOSNS, ISNS(+), ISNS(–)		min -0.3 · max 60 V	5
BIAS		min -0.3 · max 40 V	5
FB, SS, DITH, RT/SYNC, SLOPE, COMP		min -0.3 · max 3.6 V	5
SW1, SW2		min -1 · max 60 V	5
SW1, SW2 (20 ns transient)	20 ns transient	min -5 · max 65 V	5
VCC, MODE, PGOOD		min -0.3 · max 8.5 V	5
LDRV1, LDRV2		min -0.3 · max 8.5 V	5
BOOT1, HDRV1 with respect to SW1	with respect to SW1	min -0.3 · max 8.5 V	5
BOOT2, HDRV2 with respect to SW2	with respect to SW2	min -0.3 · max 8.5 V	5
BOOT1, BOOT2		min -0.3 · max 68 V	5
ISNS(+) with respect to ISNS(-)	with respect to ISNS(-)	min -0.3 · max 0.3 V	5
CS, CSG		min -0.3 · max 0.3 V	5
Operating junction temperature		min -40 · max 150 °C	5
Storage temperature Tstg		min -65 · max 150 °C	5
Human body model (HBM) ESD stress voltage VESD	HBM	min -2000 · max 2000 V	5
Charged device model (CDM) ESD stress voltage VESD	CDM	min -750 · max 750 V	5
Input bias voltage VIN		min 4.2 · max 55 V	5
Input power stage voltage with external bias VISNS	BIAS ≥ 5 V or VIN ≥ 4.5 V	min 2.5 · max 55 V	5
Bias supply voltage (when VCC in regulation) BIAS	VCC in regulation	min 8 · max 36 V	5
Output voltage range VOSNS		min 0.8 · max 55 V	5
Enable voltage range EN/UVLO		min 0 · max 55 V	5
Average current sense common mode range ISNS(+), ISNS(–)		min 0 · max 55 V	5
Operating temperature TJ	Junction temperature	min -40 · max 125 °C	5
Operating frequency fsw		min 100 · max 600 kHz	5
Junction-to-ambient thermal resistance RθJA	PWP (HTSSOP), 28 PINS	typ 32.6 °C/W	6
Junction-to-case (top) thermal resistance RθJC(top)	PWP (HTSSOP), 28 PINS	typ 21.4 °C/W	6
Junction-to-board thermal resistance RθJB	PWP (HTSSOP), 28 PINS	typ 8.2 °C/W	6
Junction-to-top characterization parameter ψJT	PWP (HTSSOP), 28 PINS	typ 0.3 °C/W	6
Junction-to-board characterization parameter ψJB	PWP (HTSSOP), 28 PINS	typ 8.3 °C/W	6
Junction-to-case (bottom) thermal resistance RθJC(bot)	PWP (HTSSOP), 28 PINS	typ 1 °C/W	6
VIN shutdown current IQ	VEN/UVLO = 0 V; VIN = 24 V	typ 2.6 · max 10 uA	6
VIN operating current IQ	VEN/UVLO = 2 V, VFB = 0.9 V; VIN = 24 V	typ 2 · max 4 mA	6
Regulation voltage VVCC(VIN)	VBIAS = 0 V, VCC open; VIN = 24 V	min 6.95 · typ 7.35 · max 7.88 V	6
VCC undervoltage lockout VUV(VCC)	VCC increasing	min 3.11 · typ 3.27 · max 3.43 V	6
Undervoltage hysteresis		typ 176 mV	6
VCC current limit IVCC	VVCC = 0 V	min 65 mA	6
VCC regulator output impedance ROUT(VCC)	IVCC = 30 mA, VIN = 4 V	typ 8 · max 16 Ω	6
BIAS switchover voltage VBIAS(SW)	VIN = 24 V	min 7.25 · typ 8 · max 8.75 V	6
Standby threshold VEN(STBY)	EN/UVLO rising	min 0.55 · typ 0.82 · max 0.97 V	6
Standby source current IEN(STBY)	VEN/UVLO = 1.1 V	min 1 · typ 2 · max 3 uA	6
Operating threshold VEN(OP)	EN/UVLO rising	min 1.17 · typ 1.22 · max 1.29 V	6
Operating hysteresis current ΔIHYS(OP)	VEN/UVLO = 1.5 V	min 2.15 · typ 3.15 · max 4.25 uA	6
Soft-start pullup current ISS	VSS = 0 V	min 3.75 · typ 5 · max 6.35 uA	6
SS clamp voltage VSS(CL)	SS open	typ 1.21 V	6
FB to SS offset VFB - VSS	VSS = 0 V	typ -18 mV	6
Feedback reference voltage VREF	FB = COMP	min 0.788 · typ 0.8 · max 0.812 V	6
Error amplifier gm gmEA		typ 1.31 mS	6
COMP sink/source current ISINK/ISOURCE	VFB=VREF ± 300 mV	typ 280 uA	6
Amplifier output resistance ROUT		typ 20 MΩ	6
Unity gain bandwidth BW		typ 2 MHz	6
Feedback pin input bias current IBIAS(FB)	FB in regulation	max 25 nA	6
Switching frequency 1 fSW(1)	RT = 40 kΩ	min 175 · typ 200 · max 225 kHz	6
Switching frequency 2 fSW(2)	RT = 20 kΩ	min 350 · typ 390 · max 430 kHz	6
Dither source/sink current IDITHER		typ 11 uA	7
Dither high threshold VDITHER		typ 1.27 V	7
Dither low threshold VDITHER		typ 1.16 V	7
Sync input high threshold VSYNC		min 2.1 V	7
Sync input low threshold VSYNC		max 1.2 V	7
Minimum sync input pulse width PWSYNC		min 50 ns	7
Buck current limit threshold (Valley, HTSSOP-28) VCS(BUCK)	HTSSOP-28; VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V	min 66 · typ 80 · max 94 mV	7
Boost current limit threshold (Peak, HTSSOP-28) VCS(BOOST)	HTSSOP-28; VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V	min 100 · typ 120 · max 140 mV	7
CS/CSG pin bias current IBIAS(CS/CSG)	VCS = VCSG = 0 V	typ -80 uA	7
CSG pin bias current IOFFSET(CS/CSG)	VCS = VCSG = 0 V	max 19 uA	7
Average current loop regulation target VSNS	VISNS(-) = 24 V, sweep ISNS(+), VSS = 0.8 V	min 43 · typ 50 · max 57 mV	7
ISNS(+), ISNS(–) pin bias currents ISNS	VISNS(+) = VISNS(–) = VIN = 24 V	typ 3 uA	7
gm of soft-start pulldown amplifier Gm	VISNS(+)–VISNS(–) = 55 mV, VSS = 0.5 V	typ 1 mS	7
Buck adaptive slope current ISLOPE	VIN = VVISNS = 24 V, VVOSNS = 12 V, VSLOPE = 0 V	min 24 · typ 30 · max 35 uA	7
Boost adaptive slope current ISLOPE	VIN = VVISNS = 12 V, VVOSNS = 18 V, VSLOPE = 0 V	min 13 · typ 17 · max 21 uA	7
Slope compensation amplifier gm gmSLOPE		typ 2 uS	7
Source current out of MODE pin IMODE		min 17 · typ 20 · max 23 uA	7
CCM with hiccup threshold VCCM_HIC		min 1.18 · typ 1.28 · max 1.38 V	7
CCM no hiccup threshold VCCM		min 2.22 · typ 2.4 · max 2.6 V	7
PGOOD trip threshold for falling FB VPGD	Measured with respect to VREF	typ -9 %	8
PGOOD trip threshold for rising FB VPGD	Measured with respect to VREF	typ 10 %	8
Hysteresis	PGOOD	typ 2.5 %	8
PGOOD leakage current ILEAK(PGD)		max 100 nA	8
PGOOD sink current ISINK(PGD)	VPGOOD = 0.4 V	min 2 · typ 4.2 · max 6.5 mA	8
Output overvoltage threshold at FB pin VOVP	Measured with respect to VREF	typ 10 %	8
Hysteresis	OUTPUT OVP	typ 2.5 %	8
Driver peak source current IHDRV1,2	VBOOT - VSW = 7 V	typ 1.8 A	8
Driver peak sink current IHDRV1,2	VBOOT - VSW = 7 V	typ 2.2 A	8
Driver peak source current ILDRV1,2		typ 1.8 A	8
Driver peak sink current ILDRV1,2		typ 2.2 A	8
Driver pullup resistance RHDRV1,2	VBOOT - VSW = 7 V	typ 1.8 Ω	8
Driver pulldown resistance RHDRV1,2	VBOOT - VSW = 7 V	typ 1.1 Ω	8
BOOT1,2 to SW1,2 UVLO threshold VUV(BOOT1,2)	HDRV1,2 shut off	typ 3.4 V	8
BOOT1,2 to SW1,2 UVLO hysteresis VUV(BOOT1,2)	HDRV1,2 start switching	typ 150 mV	8
Driver pullup resistance RLDRV1,2		typ 1.7 Ω	8
Driver pulldown resistance RLDRV1,2		typ 1.3 Ω	8
Dead time HDRV1,2 off to LDRV1,2 on tDT1		typ 45 ns	8
Dead time LDRV1,2 off to HDRV1,2 on tDT2		typ 45 ns	8
Thermal shutdown temperature TSD		typ 165 °C	8
Thermal shutdown hysteresis TSD(HYS)		typ 15 °C	8

Pins, by the datasheet

1 EN/UVLO: Enable input; below 0.4 V selects shutdown, above 1.22 V enables PWM provided VCC exceeds its undervoltage threshold. · p. 3
2 VIN: IC input supply; connect to a supply between 4.2 V and 55 V. · p. 3
3 VISNS: VIN sense input; connect to the power stage input rail. · p. 3
4 MODE: Selects CCM with hiccup using 93.1 kΩ to AGND, or CCM without hiccup using 200 kΩ to AGND or connection to VCC. · p. 3
5 DITH: Capacitor to AGND programs frequency dithering of 10% of the nominal frequency; ground to disable; ignored during external synchronization. · p. 3
6 RT/SYNC: Resistor to AGND programs switching frequency; also accepts an external synchronization clock. · p. 3
7 SLOPE: Capacitor to AGND provides the slope compensation ramp for buck and boost operation. · p. 3
8 SS: Capacitor to AGND programs soft-start time. · p. 3
9 COMP: Error amplifier output; connect an external RC network to AGND to compensate the feedback loop. · p. 3
10 AGND: Analog ground of the IC. · p. 3
11 FB: Output voltage feedback input; connect a resistor divider from the converter output. · p. 3

Ordering codes, by the datasheet

LM5176PWPR: HTSSOP (PWP) | 28 · 2000 | LARGE T&R; operating temperature -40 to 125 °C · p. 34
LM5176PWPR.B: HTSSOP (PWP) | 28 · 2000 | LARGE T&R; operating temperature -40 to 125 °C · p. 34
LM5176PWPT: HTSSOP (PWP) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176PWPT.B: HTSSOP (PWP) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176PWPTG4: HTSSOP (PWP) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176PWPTG4.B: HTSSOP (PWP) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFR: VQFN (RHF) | 28 · 3000 | LARGE T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFR.B: VQFN (RHF) | 28 · 3000 | LARGE T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFT: VQFN (RHF) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFT.B: VQFN (RHF) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFTG4: VQFN (RHF) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34
LM5176RHFTG4.B: VQFN (RHF) | 28 · 250 | SMALL T&R; operating temperature -40 to 125 °C · p. 34

Parameters

Current - Supply: 2mA
Current - Supply(Max): 4mA
Features: Overcurrent Protection
Frequency - Switching: 600kHz
Function: Buck-Boost
Junction Temperature(Max): 150℃
Number of Outputs: 1
Operating Temperature: -40℃~+125℃@(TJ)
Output Current: 2A
Output Type: Adjustable
Output Voltage: 800mV~55V
Quiescent Current: 2mA
Reference Voltage: 800mV
Standby Current: 2.6uA
Switch tube (built-in/external): External
Synchronous Rectifier: Yes
Thermal Resistance(Junction to Ambient): 32.6℃/W
Thermal Resistance(Junction to Board): 8.2℃/W
Thermal Resistance(Junction to Case): 21.4℃/W
Topology: Buck
Voltage - Supply: 2.5V~55V
Voltage - Supply(Absolute Max): 60V

Order codes

LM5176PWPRLCSC C22400036
LM5176PWPRLCSC C442493

Pinout

The pins of the LM5176PWPR
Pin	Name	Type
1	EN/UVLO	Input
2	VIN	Power in
3	VISNS	Input
4	MODE	Input
5	DITH	Passive
6	RT/SYNC	Input
7	SLOPE	Passive
8	SS	Passive
9	COMP	Passive
10	AGND	Power in
11	FB	Input
12	VOSNS	Output
13	ISNS(-)	Input
14	ISNS(+)	Input
15	CSG	Input
16	CS	Input
17	PGOOD	Output
18	SW2	Output
19	HDRV2	Output
20	BOOT2	Passive
21	LDRV2	Output
22	PGND	Power in
23	VCC	Power in
24	BIAS	Input
25	LDRV1	Output
26	BOOT1	Passive
27	HDRV1	Output
28	SW1	Output
29	PowerPAD	Input

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Questions

Is there a KiCad symbol and footprint for the LM5176PWPR?

Yes. The symbol is Regulator_Switching:LM5176PWP and the footprint Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the LM5176PWPR?

HTSSOP-28-EP, with 29 pins. Its footprint is drawn on this page.

Where is the LM5176PWPR datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the LM5176PWPR?

JLCPCB lists it as part C442493, with 5,148 in stock; the sellers' links on this page open their listings.

Which open-source boards use the LM5176PWPR?

6 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.