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参数资料
| 型号： | TPS54332DDAR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | PLASTIC, SOIC-8 |
| 文件页数： | 21/26页 |
| 文件大小： | 986K |
| 代理商： | TPS54332DDAR |
1
2
3
4
5
6
7
8
BOOT
VIN
EN
SS
PH
GND
COMP
VSENSE
PowerPAD
(Pin 9)
DDA PACKAGE
(TOP VIEW)
SLVS875A – JANUARY 2009 – REVISED MARCH 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = –40°C to 150°C, VIN = 3.5V to 28V (unless otherwise noted)
DESCRIPTION
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THERMAL SHUTDOWN
Thermal Shutdown
165
°C
SLOW START (SS PIN)
Charge current
V(SS) = 0.4 V
2
mA
SS to VSENSE matching
V(SS) = 0.4 V
10
mV
DEVICE INFORMATION
PIN ASSIGNMENTS
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME
NO.
BOOT
1
A 0.1 mF bootstrap capacitor is required between BOOT and PH. If the voltage on this capacitor falls below the
minimum requirement, the high-side MOSFET is forced to switch off until the capacitor is refreshed.
VIN
2
Input supply voltage, 3.5 V to 28 V.
EN
3
Enable pin. Pull below 1.25V to disable. Float to enable. Programming the input undervoltage lockout with two
resistors is recommended.
SS
4
Slow start pin. An external capacitor connected to this pin sets the output rise time.
VSENSE
5
Inverting node of the gm error amplifier.
COMP
6
Error amplifier output, and input to the PWM comparator. Connect frequency compensation components to this pin.
GND
7
Ground.
PH
8
The source of the internal high-side power MOSFET.
PowerPAD
9
GND pin must be connected to the exposed pad for proper operation.
4
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS54332
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