HT2307ARZ
HTCSEMIExtended
-20℃~+125℃@(TJ) 1 300kHz~380kHz 3A 4.5V~27V 925mV~20V Adjustable Buck Buck Built-in Yes ESOP-8 DC-DC Converters ROHS
- Part id
- htcsemi/HT2307ARZ
- Category
- DC DC Converters
- Package
- ESOP-8
- Pins
- 9
- In stock
- 503 at JLCPCB (C2928813)
Overview
The HT2307ARZ is a DC DC Converter made by HTCSEMI in a ESOP-8 package with 9 pins. -20℃~+125℃@(TJ) 1 300kHz~380kHz 3A 4.5V~27V 925mV~20V Adjustable Buck Buck Built-in Yes ESOP-8 DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:LSP5523-R8A, from EasyEDA) and its footprint (EasyEDA_Cloud:ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP3.1, from EasyEDA), ready for a KiCad board. 503 are in stock at JLCPCB (part C2928813).
Symbol
Footprint
From the datasheet
13- Supply, least
- 4.5 V · VIN, recommended operating min · p. 4
- Supply, most
- 27 V · VIN, recommended operating max · p. 4
- Supply, absolute maximum
- 30 V · VIN, absolute maximum · p. 3
- Works from
- -40 °C · TA, operating min for all packages · p. 1
- Works up to
- 85 °C · TA, operating max for all packages · p. 1
- Junction, hottest
- 150 °C · junction temperature absolute maximum · p. 3
- Takes working
- 1.3 mA · VIN, typical operating current, VEN = 3V, VFB = 1.0V · p. 5
- Takes at most
- 1.5 mA · VIN, max operating supply current, VEN = 3V, VFB = 1.0V · p. 5
- Takes asleep
- 300 nA · VIN, typical shutdown current, VEN = 0 · p. 5
- Gives
- 3 A · rated continuous output current · p. 1
- Current limit
- 4.5 A · typical upper switch current limit, minimum duty cycle · p. 4
- Feedback reference
- 925 mV · FB, typical feedback voltage, 4.5V ≤ VIN ≤ 27V · p. 4
- Switches at
- 340 kHz · typical switching frequency · p. 4
What it is and has
11- Topology
- Monolithic synchronous buck regulator · p. 1
- Output current
- 3A · p. 1
- Input voltage range
- 4.5V to 27V · p. 1
- Switching frequency
- Fixed 340KHZ · p. 1
- Power switches
- Integrated Power MOSFET switches · p. 1
- Adjustable output
- 0.925V to 20V · p. 1
- Efficiency
- Up to 95% · p. 1
- Soft-start
- Programmable · p. 1
- Protection
- Cycle by cycle over current protection · p. 1
- Protection
- Short circuit protection · p. 1
- Protection
- Input under voltage lockout · p. 1
Around it
26- cap 0.01uF
- between BS and SW; Bootstrap capacitor. · p. 2
- cap 0.1uF
- between SS and GND; Sets the soft-start period to 13ms. · p. 2
- cap 100uF or higher
- between VIN and GND; Low ESR electrolytic input capacitor; place close to VIN and GND; RMS ripple current rating greater than 50% of output current. · p. 7
- cap 0.1uF
- between VIN and GND; Ceramic capacitor right next to the IC permits the main input capacitor to be placed farther away. · p. 7
- cap 22uF
- between VOUT and GND; Typically use two ceramic output capacitors. · p. 7
- res 1.0 KΩ
- between VOUT and FB; R1 for 1.0V output; R2 = 12 KΩ. · p. 6
- res 12 KΩ
- between FB and GND; R2 for 1.0V output; R1 = 1.0 KΩ. · p. 6
- res 3.0 KΩ
- between VOUT and FB; R1 for 1.2V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 1.2V output; R1 = 3.0 KΩ. · p. 6
- res 9.53 KΩ
- between VOUT and FB; R1 for 1.8V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 1.8V output; R1 = 9.53 KΩ. · p. 6
- res 16.9 KΩ
- between VOUT and FB; R1 for 2.5V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 2.5V output; R1 = 16.9 KΩ. · p. 6
- res 26.1 KΩ
- between VOUT and FB; R1 for 3.3V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 3.3V output; R1 = 26.1 KΩ. · p. 6
- res 44.2 KΩ
- between VOUT and FB; R1 for 5V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 5V output; R1 = 44.2 KΩ. · p. 6
- res 121 KΩ
- between VOUT and FB; R1 for 12V output; R2 = 10 KΩ. · p. 6
- res 10 KΩ
- between FB and GND; R2 for 12V output; R1 = 121 KΩ. · p. 6
- ind 4.7uH
- between SW and VOUT; Typical inductor for 1.0V or 1.2V output. · p. 7
- ind 10uH
- between SW and VOUT; Typical inductor for 1.5V, 1.8V, 2.5V, 3.3V or 5V output. · p. 7
- ind 22uH
- between SW and VOUT; Typical inductor for 9V output. · p. 7
- diode B130
- between SW and GND; Optional Schottky diode; VIN <20V; 30V, 1A. · p. 7
- diode SK13
- between SW and GND; Optional Schottky diode; VIN <20V; 30V, 1A. · p. 7
- diode B140
- between SW and GND; Optional Schottky diode; VIN >20V; 40V, 1A. · p. 7
- diode SK14
- between SW and GND; Optional Schottky diode; VIN >20V; 40V, 1A. · p. 7
Specifications
34| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Input Supply Voltage | min -0.3 · max 30 V | 3 | |
| SW Voltage | Upper limit VIN + 0.3 V | min -0.3 V | 3 |
| EN, FB, COMP Voltage | min -0.3 · max 5 V | 3 | |
| Junction to Ambient Thermal Resistance (θJA) θJA | Test on Approximately 3 in2 Copper Area 1oz copper FR4 board; value listed under Value | max 20 °C/W | 3 |
| Junction to Ambient Case Resistance (θJC) θJC | Value listed under Value | max 10 °C/W | 3 |
| Maximum Junction Temperature | max 150 °C | 3 | |
| Storage Temperature Range | min -65 · max 150 °C | 3 | |
| Input Supply Voltage | min 4.5 · max 27 V | 4 | |
| Operating Junction Temperature | min -20 · max 125 °C | 4 | |
| Feedback Voltage VFB | VIN = 12V, TA= 25°C unless otherwise specified; 4.5V ≤ VIN ≤ 27V | min 0.9 · typ 0.925 · max 0.95 V | 4 |
| Feedback Overvoltage Threshold | VIN = 12V, TA= 25°C | typ 1.1 V | 4 |
| High-Side Switch-On Resistance* | VIN = 12V, TA= 25°C; guaranteed by design, not tested | typ 90 mΩ | 4 |
| Low-Side Switch-On Resistance* | VIN = 12V, TA= 25°C; guaranteed by design, not tested | typ 70 mΩ | 4 |
| High-Side Switch Leakage | VIN = 12V, TA= 25°C; VEN = 0V, VSW = 0V | typ 0.1 · max 10 uA | 4 |
| Upper Switch Current Limit* | VIN = 12V, TA= 25°C; Minimum Duty Cycle; guaranteed by design, not tested | min 3.8 · typ 4.5 A | 4 |
| Lower Switch Current Limit* | VIN = 12V, TA= 25°C; From Drain to Source; guaranteed by design, not tested | typ 1.2 A | 4 |
| COMP to Current Sense Limit Transconductance GCS | VIN = 12V, TA= 25°C | typ 5.2 A/V | 4 |
| Error Amplifier Transconductance GEA | VIN = 12V, TA= 25°C; ΔICOMP = ±10uA | typ 900 uA/V | 4 |
| Error Amplifier DC Gain* AVEA | VIN = 12V, TA= 25°C; guaranteed by design, not tested | typ 400 V/V | 4 |
| Switching Frequency fSW | VIN = 12V, TA= 25°C | min 300 · typ 340 · max 380 KHz | 4 |
| Short Circuit Switching Frequency | VIN = 12V, TA= 25°C; VFB = 0 | typ 100 KHz | 4 |
| Minimum Duty Cycle* Dmin | VIN = 12V, TA= 25°C; guaranteed by design, not tested | min 7.5 % | 4 |
| Maximum Duty Cycle Dmax | VIN = 12V, TA= 25°C | typ 92 % | 4 |
| EN Shutdown Threshold Voltage | VIN = 12V, TA= 25°C; VEN Rising | min 1.1 · typ 1.4 · max 2 V | 4 |
| EN Shutdown Threshold Voltage Hysteresis | VIN = 12V, TA= 25°C | typ 180 mV | 4 |
| EN Lockout Threshold Voltage | VIN = 12V, TA= 25°C | min 2.2 · typ 2.5 · max 2.7 V | 4 |
| EN Lockout Hysteresis | VIN = 12V, TA= 25°C | typ 150 mV | 4 |
| Supply Current in Shutdown | VIN = 12V, TA= 25°C; VEN = 0 | typ 0.3 · max 3 uA | 5 |
| IC Supply Current in Operation | VIN = 12V, TA= 25°C; VEN = 3V, VFB = 1.0V | typ 1.3 · max 1.5 mA | 5 |
| Input UVLO Threshold Rising UVLO | VIN = 12V, TA= 25°C; VEN Rising | min 3.8 · typ 4 · max 4.4 V | 5 |
| Input UVLO Threshold Hysteresis | VIN = 12V, TA= 25°C | typ 150 mV | 5 |
| Soft-start Current | VIN = 12V, TA= 25°C; VSS = 0V | typ 6 uA | 5 |
| Soft-start Period | VIN = 12V, TA= 25°C; CSS = 0.1uF | typ 13 mS | 5 |
| Thermal Shutdown Temperature* | VIN = 12V, TA= 25°C; Hysteresis =25°C; guaranteed by design, not tested | typ 155 °C | 5 |
Pins, by the datasheet
9- 1 BS
- Bootstrap positive rail for the high-side switch gate driver; connect a 0.01uF capacitor between BS and SW. · p. 2
- 2 VIN
- Input supply; bypass to GND with a low ESR capacitor. · p. 2
- 3 SW
- Switch output; connect to the switching end of the inductor. · p. 2
- 4 GND
- Ground. · p. 2
- 5 FB
- Feedback input regulated to 0.925V; connect to the resistor divider between output and ground. · p. 2
- 6 COMP
- Compensation pin; see Stability Compensation. · p. 2
- 7 EN
- Enable input: above 2.7V turns the IC on and below 1.1V turns it off; output is discharged when off; do not leave open. · p. 2
- 8 SS
- Soft-start control input; connect a capacitor to GND to set the soft-start period; 0.1uF sets 13ms. · p. 2
- Exposed Pad Exposed Pad
- Connect to GND pin. · p. 2
Ordering codes, by the datasheet
2- HT2307ANZ
- DIP8 · DIP8 package · p. 1
- HT2307ARZ
- ESOP8 · ESOP8 package · p. 1
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Questions
Is there a KiCad symbol and footprint for the HT2307ARZ?
Yes. The symbol is EasyEDA_Cloud:LSP5523-R8A and the footprint EasyEDA_Cloud:ESOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP3.1, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the HT2307ARZ?
ESOP-8, with 9 pins. Its footprint is drawn on this page.
Where is the HT2307ARZ datasheet?
HTCSEMI publishes it: the Datasheet link on this page opens it.
Where can I order the HT2307ARZ?
JLCPCB lists it as part C2928813, with 503 in stock; the sellers' links on this page open their listings.
What can replace the HT2307ARZ?
Parts like it in the library: the GBI1450SMAR by GOSEMICON, the GBI1430SMAR by GOSEMICON, the GBI1633SMAR by GOSEMICON and the GBI1631SMAR by GOSEMICON. Check their datasheets: a part that fits the footprint may still differ in its ratings.