参数资料
型号: TPS51317RGBR
厂商: Texas Instruments
文件页数: 6/28页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 6A 20VQFN
标准包装: 3,000
系列: D-Cap+™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.6 V ~ 2 V
输入电压: 4.5 V ~ 6.5 V
PWM 型: 混合物
频率 - 开关: 800kHz,1MHz,1.2MHz,1.5MHz
电流 - 输出: 6A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 20-VQFN(3.5x4.0)
SLUSAH9 – MARCH 2011
TPS51317
RGB PACKAGE
(Top View)
PGND
PGND
PGND
VIN
VIN
1
2
3
4
5
20
6
19
7
18
8
17
9
16
10
15
14
13
12
11
SW
SW
SW
SW
SW
Table 2. PIN FUNCTIONS
NO.
16
8
17
6
18
PIN
NAME
BST
COMP
EN
GND
MODE
I/O
I
O
I
I
DESCRIPTION
Power supply for internal high-side gate driver. Connect a 0.1- μ F bootstrap capacitor between this pin and
the SW pin.
Connect series R-C filter between this pin and VREF for loop compensation.
Enable of the SMPS (3.3-V logic compatible).
Signal ground.
Allows selection of switching frequencies light-load modes. (See Table 4 )
1
2
PGND
I
Power ground. Source terminal of the rectifying low-side power FET. Positive input for current sensing.
3
19
9
PGOOD
REFIN
O
Power good output. Connect pull-up resistor.
Target output voltageinput pin. Apply voltage between 0.6 V to 2.0 V.
11
12
13
SW
I/O
Switching node output. Connect to the external inductor. Also serve as current-sensing negative input.
14
15
20
4
5
10
7
V5IN
VIN
VOUT
VREF
I
I
I
O
5-V power supply for analog circuits and gate drive.
Power supply input pin. Drain terminal of the switching high-side power FET.
Output voltage monitor input pin.
2.0-V reference output. Connect a 0.22- μ F ceramic capacitor to GND.
6
Product Folder Link(s): TPS51317
Copyright ? 2011, Texas Instruments Incorporated
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