4 layers200 × 110 mm
AP64500SP
Diodes Incorporated
-40℃~+85℃ 1 100kHz~2.2MHz 25uA 3.8V~40V 5A 800mV~39V Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Frequency synchronization、Hiccup current limiting、External compensation、EMI optimization (spread spectrum) Step-down type Yes SO-8-EP DC-DC Converters ROHS
Extended
- Category
- DC DC Converters
- Package
- SO-8-EP
- Pins
- 9
Overview
The AP64500SP is a DC DC Converter made by Diodes Incorporated in a SO-8-EP package with 9 pins. -40℃~+85℃ 1 100kHz~2.2MHz 25uA 3.8V~40V 5A 800mV~39V Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Frequency synchronization、Hiccup current limiting、External compensation、EMI optimization (spread spectrum) Step-down type Yes SO-8-EP DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AP64100QSP-13, from EasyEDA) and its footprint (EasyEDA_Cloud:SO-8_L4.9-W3.9-P1.27-LS6.0-BL-EP, from EasyEDA), ready for a KiCad board. 1,957 are in stock at JLCPCB (part C2070920). 6 open-source boards in 6 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
16- Supply, least
- 3.8 V · VIN, recommended operating min · p. 5
- Supply, most
- 40 V · VIN, recommended operating max · p. 5
- Supply, absolute maximum
- 42 V · VIN, absolute max DC · p. 5
- Supply, absolute maximum
- 45 V · VIN, absolute max for 400ms · p. 5
- Works from
- -40 °C · Operating ambient temperature min · p. 5
- Works up to
- 85 °C · Operating ambient temperature max · p. 5
- Junction, hottest
- 125 °C · Recommended operating junction temperature max · p. 5
- Junction, hottest
- 160 °C · Absolute maximum junction temperature · p. 5
- Takes working
- 25 µA · Quiescent current typical, no load, non-switching · p. 11
- Takes asleep
- 1 µA · Shutdown supply current typical, VEN = 0V · p. 6
- Gives
- 5 A · Continuous output current max · p. 1
- Current limit
- 8 A · HS peak current limit typical · p. 6
- Feedback reference
- 800 mV · Feedback voltage typical, CCM · p. 6
- Switches at
- 500 kHz · Oscillator frequency typical, RT = 200kΩ (±1%) · p. 6
- Junction to air (SO-8EP)
- 45 K/W · Junction to ambient, four-layer FR-4 PCB, 2oz copper · p. 5
- Junction to case (SO-8EP)
- 5 K/W · Junction to case · p. 5
What it is and has
14- Continuous output current
- 5A · p. 1
- Reference voltage
- 0.8V ± 1% · p. 1
- Programmable switching frequency
- 100kHz to 2.2MHz · p. 1
- External clock synchronization
- 100kHz to 2.2MHz · p. 1
- EMI reduction
- Frequency Spread Spectrum (FSS) · p. 1
- Low-dropout mode
- Supported · p. 1
- Undervoltage lockout
- Precision enable threshold for adjustment · p. 1
- Protection
- Undervoltage Lockout (UVLO) · p. 1
- Protection
- Output Overvoltage Protection (OVP) · p. 1
- Protection
- Cycle-by-Cycle Peak Current Limit · p. 1
- Protection
- Thermal Shutdown · p. 1
- Package
- SO-8EP · p. 1
- Compliance
- Lead-free and RoHS compliant · p. 1
- Converter
- 5A synchronous buck · p. 1
Around it
12- cap 100nF
- between BST and SW; Recommended bootstrap capacitor to power the high-side driver. · p. 3
- cap 10 µF
- between VIN and GND; C1, recommended component selection for 5.0 V output at 500kHz. · p. 14
- cap 3 x 22 µF
- between VOUT and GND; C2, recommended component selection for 5.0 V output at 500kHz. · p. 14
- ind 3.6 µH
- between SW and VOUT; L, recommended component selection for 5.0 V output at 500kHz. · p. 14
- res 115.8 kΩ
- between VOUT and FB; R1, recommended feedback divider for 5.0 V output at 500kHz. · p. 14
- res 22.1 kΩ
- between FB and GND; R2, recommended feedback divider for 5.0 V output at 500kHz. · p. 14
- res 15.80 kΩ
- between COMP and R5-C5 junction; R5, series compensation resistor for 5.0 V output at 500kHz. · p. 14
- cap 2.7 nF
- between R5-C5 junction and GND; C5, series compensation capacitor for 5.0 V output at 500kHz. · p. 14
- cap 39 pF
- between COMP and GND; C6, optional compensation capacitor for 5.0 V output at 500kHz. · p. 14
- cap greater than 10µF
- between VIN and GND; Ceramic; sufficient for most applications. Place closely across VIN and GND. RMS current rating should exceed half the maximum load current. · p. 16
- cap 22µF to 68µF
- between VOUT and GND; Ceramic, low ESR; sufficient for most applications. Check output ripple and load transient requirements. · p. 16
- cap 100nF
- between BST and SW; Ceramic bootstrap capacitor required for proper operation. · p. 16
Specifications
41| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Supply Pin Voltage VIN | DC; TA = +25°C | min -0.3 · max 42 V | 5 |
| Supply Pin Voltage VIN | 400ms; TA = +25°C | min -0.3 · max 45 V | 5 |
| Enable/UVLO Pin Voltage VEN | TA = +25°C | min -0.3 · max 42 V | 5 |
| RT/CLK Pin Voltage VRT/CLK | TA = +25°C | min -0.3 · max 6 V | 5 |
| Feedback Pin Voltage VFB | TA = +25°C | min -0.3 · max 6 V | 5 |
| Compensation Pin Voltage VCOMP | TA = +25°C | min -0.3 · max 6 V | 5 |
| Switch Pin Voltage VSW | DC; upper limit VIN + 0.3 V; TA = +25°C | min -0.3 V | 5 |
| Switch Pin Voltage VSW | 20ns; upper limit VIN + 2.0 V; TA = +25°C | min -2.5 V | 5 |
| Storage Temperature TST | min -65 · max 150 °C | 5 | |
| Junction Temperature TJ | max 160 °C | 5 | |
| Lead Temperature TL | max 260 °C | 5 | |
| Human Body Model HBM | Note 5 | max 2000 V | 5 |
| Charged Device Model CDM | Note 5 | max 500 V | 5 |
| Junction to Ambient θJA | SO-8EP; FR-4 substrate, four-layer PC board, 2oz copper, minimum recommended pad layout | typ 45 °C/W | 5 |
| Junction to Case θJC | SO-8EP; FR-4 substrate, four-layer PC board, 2oz copper, minimum recommended pad layout | typ 5 °C/W | 5 |
| Supply Voltage VIN | TA = +25°C | min 3.8 · max 40 V | 5 |
| Output Voltage VOUT | TA = +25°C | min 0.8 · max 39 V | 5 |
| Operating Ambient Temperature Range TA | min -40 · max 85 °C | 5 | |
| Operating Junction Temperature Range TJ | min -40 · max 125 °C | 5 | |
| Shutdown Supply Current ISHDN | VEN = 0V; TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | typ 1 · max 3 uA | 6 |
| Quiescent Supply Current IQ | VEN = Floating, R2 = OPEN, No Load, VBST - VSW = 5V; TA = +25°C, VIN = 12V | typ 25 uA | 6 |
| VIN Undervoltage Rising Threshold UVLO | TA = +25°C; limits apply across recommended ambient temperature and input-voltage ranges | typ 3.5 · max 3.7 V | 6 |
| VIN Undervoltage Hysteresis UVLO | TA = +25°C, VIN = 12V | typ 400 mV | 6 |
| High-Side Power MOSFET On-Resistance (Note 8) RDS(ON)1 | TA = +25°C, VIN = 12V | typ 45 mΩ | 6 |
| Low-Side Power MOSFET On-Resistance (Note 8) RDS(ON)2 | TA = +25°C, VIN = 12V | typ 20 mΩ | 6 |
| HS Peak Current Limit (Note 8) IPEAK_LIMIT | TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 6.8 · typ 8 · max 9.2 A | 6 |
| LS Valley Current Limit (Note 8) IVALLEY_LIMIT | TA = +25°C, VIN = 12V | typ 9 A | 6 |
| PFM Peak Current Limit IPFMPK | TA = +25°C, VIN = 12V | typ 950 mA | 6 |
| Zero Cross Current Threshold IZC | TA = +25°C, VIN = 12V | typ 0 mA | 6 |
| Frequency Range Using RT fRANGE_RT | TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 100 · max 2200 kHz | 6 |
| Oscillator Frequency fSW | RT = 200kΩ (±1%); TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 450 · typ 500 · max 550 kHz | 6 |
| Frequency Range Using External CLK fRANGE_CLK | TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 100 · max 2200 kHz | 6 |
| Minimum On-Time tON_MIN | TA = +25°C, VIN = 12V | typ 100 ns | 6 |
| Feedback Voltage VFB | CCM; TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 792 · typ 800 · max 808 mV | 6 |
| EN Logic High Threshold VEN_H | TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | typ 1.18 · max 1.25 V | 6 |
| EN Logic Low Threshold VEN_L | TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 1.03 · typ 1.09 V | 6 |
| EN Input Current IEN | VEN = 1.5V; TA = +25°C, VIN = 12V | typ 5.5 uA | 6 |
| EN Input Current IEN | VEN = 1V; TA = +25°C, VIN = 12V; limits apply across recommended ambient temperature and input-voltage ranges | min 1 · typ 1.5 · max 2 uA | 6 |
| Soft-Start Time tSS | TA = +25°C, VIN = 12V | typ 4 ms | 6 |
| Thermal Shutdown (Note 8) TSD | VIN = 12V | typ 160 °C | 6 |
| Thermal Shutdown Hysteresis (Note 8) THys | VIN = 12V | typ 25 °C | 6 |
Pins, by the datasheet
9- 1 BST
- High-side gate drive boost input; connect a 100nF capacitor from BST to SW to power the high-side driver. · p. 3
- 2 VIN
- Power input for the IC and converter MOSFETs; drive with 3.8V to 40V and bypass to GND with a suitably large capacitor. · p. 3
- 3 EN
- Enable and programmable UVLO input; drive high to enable, low to disable, or connect to VIN or leave floating for automatic startup. · p. 3
- 4 RT/CLK
- Connect a resistor to GND to program switching frequency or apply an external clock for PLL synchronization; returns to resistor programming when clock edges stop. · p. 3
- 5 FB
- Output voltage feedback sensing terminal; connect to the output resistive divider. · p. 3
- 6 COMP
- Connect an external RC network to adjust the loop response. · p. 3
- 7 GND
- Power ground. · p. 3
- 8 SW
- Power switching output; connect the output LC filter from SW to the output load. · p. 3
- 9 EXPOSED PAD
- Die heat dissipation path; electrically connect to GND and the PCB ground plane for proper operation and thermal performance. · p. 1
Parameters
20- Current Limit
- 8A
- Features
- Light load efficient mode
- Frequency - Switching
- 500kHz
- Function
- Step-down type
- Junction Temperature(Max)
- 125℃
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+85℃
- Output Current
- 5A
- Output Type
- Adjustable
- Output Voltage
- 800mV~39V
- Quiescent Current
- 25uA
- Reference Voltage
- 800mV
- Standby Current
- 1uA
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- Yes
- Thermal Resistance(Junction to Ambient)
- 45℃/W
- Thermal Resistance(Junction to Case)
- 5℃/W
- Topology
- Buck
- Voltage - Supply
- 3.8V~40V
- Voltage - Supply(Absolute Max)
- 42V
Order codes
1- AP64500SP-13LCSC C2070920
Pinout
9| Pin | Name | Type |
|---|---|---|
| 1 | BST | Unspecified |
| 2 | VIN | Unspecified |
| 3 | EN | Unspecified |
| 4 | RT/CLK | Unspecified |
| 5 | FB | Unspecified |
| 6 | COMP | Unspecified |
| 7 | GND | Unspecified |
| 8 | SW | Unspecified |
| 9 | EP | Unspecified |
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Is there a KiCad symbol and footprint for the AP64500SP?
Yes. The symbol is EasyEDA_Cloud:AP64100QSP-13 and the footprint EasyEDA_Cloud:SO-8_L4.9-W3.9-P1.27-LS6.0-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the AP64500SP?
SO-8-EP, with 9 pins. Its footprint is drawn on this page.
Where is the AP64500SP datasheet?
Diodes Incorporated publishes it: the Datasheet link on this page opens it.
Where can I order the AP64500SP?
JLCPCB lists it as part C2070920, with 1,957 in stock; the sellers' links on this page open their listings.
What can replace the AP64500SP?
Parts like it in the library: the TPS54627DDAR by Texas Instruments, the TPS54540BQDDARQ1 by Texas Instruments, the TPS54560DDA by Texas Instruments and the TPS5450MDDAREP by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the AP64500SP?
6 boards in 6 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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