參數(shù)資料
型號: TPS62250DRVR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO6
封裝: 2 X 2 MM, 0.80 MM HEIGHT, GREEN, PLASTIC, SON-6
文件頁數(shù): 24/29頁
文件大?。?/td> 1207K
代理商: TPS62250DRVR
FUNCTIONAL BLOCK DIAGRAM
Zero-Pole
AMP.
Integrator
Error Amp .
PFMComp.
+1% Voltagepositioning
PWM
Comp.
VREF
Control
Stage
GateDriver
Anti
Shoot-Through
Current
LimitComparator
Current
LimitComparator
VREF +1%
FB
VIN
GND
MODE
2.25 MHz
Oscillator
SW1
EN
VIN
Softstart
VOUT RAMP
CONTROL
Thermal
Shutdown
Reference
0.6VVREF
Undervoltage
Lockout 1.8V
Limit
HighSide
Limit
LowSide
Sawtooth
Generator
Int. Resistor
Network
FB
R
I3
RI 1
RI..N
Mode
Onlyin 2x2SON
GND
SLVS842 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com
TERMINAL FUNCTIONS
TERMINAL
NO.
I/O
DESCRIPTION
NAME
SON
2x2-6
VIN
5
PWR
VIN power supply pin.
GND
6
PWR
GND supply pin
This is the enable pin of the device. Pulling this pin to low forces the device into shutdown mode. Pulling
EN
4
I
this pin to high enables the device. This pin must be terminated.
This is the switch pin and is connected to the internal MOSFET switches. Connect the external inductor
SW
1
OUT
between this terminal and the output capacitor.
Feedback Pin for the internal regulation loop. Connect the external resistor divider to this pin. In case of
FB
3
I
fixed output voltage option, connect this pin directly to the output capacitor
This pin is only available at SON package option. MODE pin = high forces the device to operate in fixed
MODE
2
I
frequency PWM mode. MODE pin = low enables the Power Save Mode with automatic transition from
PFM mode to fixed frequency PWM mode.
4
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS62250
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