参数资料
型号: TPS65055RSMR
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 1.8 A DUAL SWITCHING CONTROLLER, 2475 kHz SWITCHING FREQ-MAX, PQCC32
封装: 4 X 4 MM, GREEN, PLASTIC, QFN-32
文件页数: 38/41页
文件大小: 1276K
代理商: TPS65055RSMR
DEVICE INFORMATION
PIN ASSIGNMENT (TOP VIEW)
16
15
14
13
12
11
10
9
1
2 3
4
5
6
7
8
24 23 22 21 20 19 18 17
EN_DCDC1
EN_DCDC2
EN_LDO1
EN_LDO2
VINLDO1
VLDO1
SDAT
SCLK
EN_LDO4
EN_LDO3
discharge
DPD
VLDO4
VINLDO3/4
VLDO3
DEFLDO1
VDCDC1
PGND1
L1
VINDCDC1/2
L2
PGND2
VDCDC2
DEFDCDC2
BP
AGND
Vcc
VINLDO2
VLDO2
DEFLDO2
threshold
RST
25
26
27
28
29
30
31
32
TPS65055
SLVS844 – SEPTEMBER 2008.......................................................................................................................................................................................... www.ti.com
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Vcc
3
I
Power supply for digital and analog circuitry of DCDC1, DCDC2 and LDOs. This pin must be connected
to the same voltage supply as VINDCDC1/2.
VDCDC1
24
I
Feedback voltage sense input, connect directly to Vout1
VINDCDC1/2
21
Input voltage for VDCDC1 and VDCDC2 step-down converter. This must be connected to the same
voltage supply as VCC.
VDCDC2
18
I
Feedback voltage sense input, connect directly to Vout2
DEF_DCDC2
17
I
Select pin of converter 2 output voltage. High = 1.0 V, low = 1.2 V
L1
22
O
Switch pin of converter1. Connected to inductor
PGND1
23
I
GND for converter 1
PGND2
19
I
GND for converter 2
AGND
2
I
Analog GND, connect to PGND and PowerPAD
L2
20
O
Switch pin of converter 2. Connected to inductor.
EN_DCDC1
25
I
Enable input for converter1, active high
EN_DCDC2
26
I
Enable input for converter2, active high
VINLDO1
29
I
Input voltage for LDO1
VINLDO2
4
I
Input voltage for LDO2
VINLDO3/4
11
I
Input voltage for LDO3 and LDO4
VLDO1
30
O
Output voltage of LDO1
VLDO2
5
O
Output voltage of LDO2
VLDO3
10
O
Output voltage of LDO3
VLDO4
12
O
Output voltage of LDO4
DEFLDO1
9
I
Digital input, used to set the default output voltage of LDO1 to LDO4; LSB
DEFLDO2
6
I
Digital input, used to set the default output voltage of LDO1 to LDO4; MSB
SDAT
31
I/O
Data line for the I2C compatible interface.
SCLK
32
I
Clock input for the I2C compatible interface.
6
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65055
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