ZHCSJW0D June 2019 – March 2020 TPS62840
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Smart Enable and Shutdown
- 8.3.2 Soft Start
- 8.3.3 Mode Selection: Power-Save Mode (PFM/PWM) or Forced PWM Operation (FPWM)
- 8.3.4 Output Voltage Selection (VSET)
- 8.3.5 Undervoltage Lockout UVLO
- 8.3.6 Switch Current Limit / Short Circuit Protection
- 8.3.7 Output Voltage Discharge
- 8.3.8 Thermal Shutdown
- 8.3.9 STOP Mode
- 8.4 Device Functional Modes
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機(jī)械、封裝和可訂購(gòu)信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DLC|8
訂購(gòu)信息
9.2.3 Application Curves
The conditions for the following application curves are VIN = 3.6 V, VOUT = 1.8 V, MODE = GND, STOP = GND, and the used components listed in Table 2, unless otherwise noted.
| RSET = GND |
VOUT = 0.8 V
| RSET = GND |
VOUT = 1.8 V
| RSET = 11.5 kΩ to GND |
VOUT = 2.5 V
VOUT = 0.8 V / 1.2 V / 1.8 V / 3.3 V
| RSET = 15.8k Ω to GND |
VOUT = 1.2 V
| RSET = 11.5 kΩ to GND |
VOUT = 2.5 V
| RSET = GND |
VOUT = 3.4 V
| RSET = GND |
VOUT = 3.4 V
| RSET = 267 kΩ to GND |
VOUT = 3.3 V
| RSET = 15.8 kΩ to GND |
VOUT = 1.2 V
| RSET = 267 kΩ to GND |
VOUT = 3.3 V
| RSET = 267 kΩ to GND |
VOUT = 3.3 V
| EN = VIN | MODE = HIGH | |
_2.png "TPS62840 Output Voltage Ripple, PWM Operation")
| VOUT = 1.8 V
MODE = HIGH |
IOUT = 10 mA | |
| VOUT = 1.8 V
rise/fall time = 20 µs |
VIN = 2.5 V to 6.5 V
IOUT = 500 mA |
|
| VOUT = 1.8 V
rise/fall time < 1 µs |
VIN = 3.6 V
IOUT = 125 mA to 375 mA |
| VOUT = 3.3 V
rise/fall time < 1 µs |
VIN = 3.6 V
IOUT = 75 µA to 50 mA |
|
_2.png "TPS62840 Start-up/Shutdown into No Load")
| VOUT = 1.8 V
Turned on by EN input |
VIN = 3.6 V
IOUT = 0 mA |
_2.png "TPS62840 Start-up/Shutdown into No Load")
| VOUT = 1.8 V
VIN rising from 0 V to 3.6 V |
EN = VIN
IOUT = 0 mA |
_2.png "TPS62840 STOP Mode Operation")
| VOUT = 1.8 V
PFM Operation |
VIN = 3.6 V
IOUT = 10 mA |
| RSET = 15.8 kΩ to GND |
VOUT = 1.2 V
| RSET = GND |
VOUT = 1.8 V
| RSET = 267 kΩ to GND |
VOUT = 3.3 V
| RSET = GND |
VOUT = 1.2 V for the DGR device
| RSET = 267 kΩ to GND |
VOUT = 3.6 V for the DGR device
| RSET = GND |
VOUT = 0.8 V
| RSET = GND |
VOUT = 1.8 V
| RSET = 267 kΩ to GND |
VOUT = 3.3 V
| RSET = GND |
VOUT = 3.4 V
| RSET = GND |
VOUT = 1.8 V
| RSET = GND |
VOUT = 0.8 V
| RSET = GND |
VOUT = 1.8 V
| RSET = GND |
VOUT = 1.8 V
| EN = VIN | MODE = HIGH | |
_2.png "TPS62840 Output Voltage Ripple, PFM Operation")
| VOUT = 1.8 V | IOUT = 10 mA | |
| VOUT = 1.8 V
rise/fall time = 20 µs |
VIN = 2.5 V to 6.5 V
IOUT = 10 mA |
|
| VOUT = 1.8 V
rise/fall time < 1 µs |
VIN = 3.6 V
IOUT = 125 µA to 50 mA |
| VOUT = 1.8 V
rise/fall time < 1 µs |
VIN = 3.6 V
IOUT = 0 A to 100 mA |
|
_2.png "TPS62840 100% Mode Entry/Exit Operation")
| VOUT = 3.3 V | VIN = 3.1 V to 3.6 V
IOUT = 50 mA |
|
_2.png "TPS62840 Start-up/Shutdown into Load")
| VOUT = 1.8 V
Turned on by EN input |
VIN = 3.6 V
IOUT = 400 mA RLOAD = 4.5 Ω |
_2.png "TPS62840 Start-up/Shutdown into No Load")
| VOUT = 3.3 V
Turned on by EN input |
VIN = 3.6 V
IOUT = 0 mA |
_2.png "TPS62840 STOP Mode Operation")
| VOUT = 1.8 V
PWM Operation |
VIN = 3.6 V
IOUT = 10 mA |