The TPS60400DBVR from TI is a 60mA charge pump voltage inverter generating -Vin from 1.6-5.5V input in SOT-23-5 for generating negative rails without inductors.
| 包装 | SOT-23-5 |
The TPS60400DBVR from TI is a 60mA charge pump voltage inverter generating -Vin from 1.6-5.5V input in SOT-23-5 for generating negative rails without inductors.
The TPS60400DBVR is an inverting charge pump voltage inverter from Texas Instruments in SOT-23-5, generating a negative output voltage from a positive input (1.6-5.5V). The output voltage is approximately -VIN with up to 60mA load current. The charge pump uses a two-phase switching cycle: Phase 1 charges the flying capacitor (CFLY) to VIN (IN to CFLY+ and GND to CFLY-), Phase 2 inverts the capacitor connection (CFLY+ to GND, CFLY- to OUT), transferring charge to the output capacitor and producing -VIN at OUT. The switching frequency is 20kHz at light load (PFM mode) and up to 250kHz at heavy load, reducing the output ripple at higher currents. The output resistance is approximately 15 ohms, meaning the output voltage droops at higher loads: VOUT = -VIN + (ILOAD x 15). At 30mA load with VIN=5V, VOUT = -5V + (-0.45V) = -4.55V. No inductors are required, making the solution extremely compact (only 3 ceramic capacitors needed: CIN, CFLY, COUT). The device is unregulated (output tracks -VIN); for regulated negative output, use TPS60401 (-5V) or TPS60402 (-3V). The quiescent current is 65uA. The -DBVR suffix specifies SOT-23-5, tape-and-reel. Applications include: negative rail for dual-supply op-amps, LCD bias, and GaAs FET gate bias.
| 针脚 | 名称 | 类型 | 功能 |
|---|---|---|---|
| 1 | CFLY+ | 电源 | Flying capacitor positive terminal (connect 1uF ceramic to pin 3) |
| 2 | IN | 电源 | Input supply (1.6-5.5V, connect with 2.2uF ceramic) |
| 3 | CFLY- | 电源 | Flying capacitor negative terminal (connect 1uF ceramic to pin 1) |
| 4 | 接地 | 电源 | 地面 |
| 5 | 出局 | 输出 | Inverted output (approximately -VIN, up to 60mA, requires 2.2uF ceramic) |
| 制造商 | 部件编号 | 包装 | 说明 |
|---|---|---|---|
| 德州仪器 | TPS60400DBVR | SOT-23-5 | Same device, TI brand |
| 德州仪器 | TPS60401DBVR | SOT-23-5 | Unregulated -5V output version |
| 德州仪器 | TPS60402DBVR | SOT-23-5 | Unregulated -3V output version |
| 模拟器件公司 | LTC1983ES6-3#TRMPBF | TSOT-23-6 | 100mA inverting charge pump, ADI |
| 马克西姆 | MAX889TEUA+T | uMAX-8 | 200mA inverting charge pump, Maxim brand |
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
品牌:
封装:
货运周期：3~7 天
最低订购量为 1
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