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TPS561243DRLR

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TI(德州仪器) Global Sourcing Parts, SOT-563. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPS561243DRLR

TI(德州仪器) · Global Sourcing Parts · SOT-563

TPS561243DRLR from TI(德州仪器), in a SOT-563. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Input voltage supply pin, operating range 4.2 V to 17 V with an absolute maximum of 19 V.
2 SW output Switch node connecting the high-side and low-side NFETs; recommended range is -1 V to 17 V (-6 V to 19 V for under 20 ns).
3 GND power_in Source terminal of the low-side power NFET and ground for the control circuitry; the sensitive FB network should connect to this GND at a single point.
4 BST power_in Supply input for the high-side NFET gate-drive circuit; a 0.1 µF capacitor must be connected between BST and SW, with a recommended range of -0.1 V to 23 V.
5 EN input Active-high enable input that must be pulled up to enable the device; the recommended maximum is 5.5 V, with a high threshold of 1.15 V to 1.28 V and a low threshold of 0.93 V to 1.05 V.
6 FB input Converter feedback input connected to the output through a resistor divider, referenced to 0.6 V, with a recommended range of -0.1 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer TI(德州仪器)
Package SOT-563
Category Global Sourcing Parts
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
输入电压 VIN (absolute maximum) VIN -0.3 19 V 4
输入电压 FB、EN (absolute maximum) -0.3 6 V 4
输入电压 GND (absolute maximum) -0.3 0.3 V 4
输出电压 BST (absolute maximum) -0.3 25 V 4
输出电压 BST (absolute maximum) -0.3 27 V < 20ns 4
输出电压 SW (absolute maximum) -2 19 V 4
输出电压 SW (absolute maximum) -6.5 21 V < 20ns 4
工作结温范围 TJ (absolute maximum) TJ -40 150 °C 4
贮存温度 Tstg (absolute maximum) Tstg -55 150 °C 4
ESD 人体放电模型 HBM V(ESD) -2000 2000 V Human body model, ANSI/ESDA/JEDEC JS-001 4
ESD 充电器件模型 CDM V(ESD) -500 500 V Charged device model, ANSI/ESDA/JEDEC JS-002 4
输入电压 VIN (recommended operating) VIN 4.2 17 V 4
输入电压 FB、EN (recommended operating) -0.1 5.5 V 4
输入电压 GND (recommended operating) -0.1 0.1 V 4
输出电压 BST (recommended operating) -0.1 23 V 4
输出电压 BST (recommended operating) -0.1 25 V < 20ns 4
输出电压 SW (recommended operating) -1 17 V 4
输出电压 SW (recommended operating) -6 19 V < 20ns 4
输出电流 IO IO 0 1 A 4
工作结温 TJ (recommended operating) TJ -40 125 °C 4
贮存温度 Tstg (recommended operating) Tstg -40 150 °C 4
输入电压范围 VIN VIN 4.2 17 V 5
UVLO VIN 唤醒电压 3.6 3.8 4 V 5
UVLO VIN 关断电压 3.2 3.4 3.6 V 5
FB 电压 (25°C) VFB 591 600 609 mV TJ = 25°C, Vin = 4.2V - 17V 5
FB 电压 (全温度范围) VFB 588 600 612 mV TJ = -40°C 至 125°C, Vin = 4.2V - 17V 5
过流阈值 谷值电流设定点 IOCL_LS 1.2 2.8 3.6 A 谷值电流设定点 5
负过流阈值 谷值电流设定点 INOCL 1 1.8 2.5 A 谷值电流设定点 5
EN 阈值高电平 VEN(ON) 1.15 1.2 1.28 V 5
EN 阈值低电平 VEN(OFF) 0.93 1 1.05 V 5
UVP 跳变阈值 VUVP 55 60 65 % 6
VIN 电源电流 (ECO 版本) IVIN 110 µA 无负载，VEN = 1.5V，非开关，ECO 版本 5
VIN 关断电流 IINSDN 7 µA VEN = 0V 5
UVLO VIN 迟滞电压 400 mV 5
高侧 MOSFET Rds(on) RDS(ON)HI 100 mΩ TJ = 25°C 5
低侧 MOSFET Rds(on) RDS(ON)LO 55 mΩ TJ = 25°C 5
开关频率 FSW 1280 kHz VOUT = 3.3V 5
最短关断时间 TOFF(MIN) 100 ns VFB = 0.5V 5
最短导通时间 TON(MIN) 55 ns 5
EN 迟滞 VENHYS 200 mV 5
EN 下拉电流 IEN 1 uA VEN = 1.5V 6
内部软启动时间 tSS 1.4 ms VOUT 从 0 到目标值 6
UVP 传播抗尖峰脉冲 tUVPDLY 256 us 6
连续断续模式开关时间 tUVPON 1.5 ms 硬短路，UVP 检测 6
连续断续模式非开关时间 tUVPOFF 13 ms 硬短路，UVP 检测 6
OTP 跳变阈值 TOTP 155 °C 6
OTP 迟滞 TOTPHSY 20 °C 6
结至环境热阻 RθJA RθJA 147.4 °C/W 5
EVM 板结到环境热阻 RθJA_effective RθJA_effective 73 °C/W EVM 板，TA = 25°C 5
结至外壳（顶部）热阻 RθJC(top) RθJC(top) 75.7 °C/W 5
结至电路板热阻 RθJB RθJB 32.2 °C/W 5
结至顶部特征参数 ΨJT ΨJT 2.1 °C/W 5
结至电路板特征参数 YJB YJB 31.8 °C/W 5

CAD (KiCad official)

  • Symbol: TPS561243DRLR
  • Footprint: Package_TO_SOT_SMD:SOT-563
  • 3D model: SOT-563 (KiCad packages3D, STEP)
  • 3D model files: tps561243drlr-etched.step / tps561243drlr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps561243drlr.step / tps561243drlr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: TI(德州仪器) datasheet (26 pp, sha256 781a0e385b4d2221, retrieved 2026-10-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF