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參數資料
| 型號： | TPS62590DRVT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1 A SWITCHING REGULATOR, 2250 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, 0.80 MM HEIGHT, PLASTIC, SON-6 |
| 文件頁數： | 19/24頁 |
| 文件大小： | 619K |
| 代理商： | TPS62590DRVT |
DRV PACKAGE
(TOPVIEW)
MODE
FB
GND
SW
EN
VIN
1
2
3
6
5
4
r
Po
w
e
P
A
D
Zero-Pole
AMP.
Integrator
Error Amp
PFMComp
PWM
Comp .
VREF
Control
Stage
GateDriver
Anti
Shoot-Through
Current
LimitComparator
Current
LimitComparator
VREF
FB
VIN
GND
MODE
SW
EN
VIN
Softstart
VOUT RAMP
CONTROL
Thermal
Shutdown
Reference
0.6VVREF
Undervoltage
Lockout1.8V
HighSide
LowSide
Sawtooth
Generator
FB
MODE
GND
2.25MHz
Oscillator
SLVS897B
– JANUARY 2009 – REVISED APRIL 2011
PIN ASSIGNMENTS
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
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.
EN
4
I
Pulling 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
SW
1
OUT
inductor between this terminal and the output capacitor.
Feedback Pin for the internal regulation loop. Connect the external resistor divider to this pin. In
FB
3
I
case of fixed output voltage option, connect this pin directly to the output capacitor
MODE pin = high forces the device to operate in fixed-frequency PWM mode. Mode pin = low
MODE
2
I
enables the Power Save Mode with automatic transition from PFM mode to fixed-frequency PWM
mode.
PwPd
Must be soldered to achieve appropriate power dissipation. Should be connected to GND.
( PowerPAD
)
FUNCTIONAL BLOCK DIAGRAM
4
Copyright
2009–2011, Texas Instruments Incorporated
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