參數(shù)資料
型號： TPS65820RSHT
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 7 X 7 MM, GREEN, PLASTIC, QFN-56
文件頁數(shù)： 11/98頁
文件大?。?/td> 2290K
代理商： TPS65820RSHT
www.ti.com .............................................................................................................................................................. SLVS663B – MAY 2006 – REVISED APRIL 2008
NAME
PIN
I/O
DESCRIPTION
EXTERNAL REQUIRED COMPONENTS
(SEE APPLICATION DIAGRAM)
PGND1
45
–
SM1 synchronous buck converter power
Connect to power ground plane
ground
PGND2
52
–
SM1 synchronous buck converter power
Connect to power ground plane
ground
PGND3
38
–
White LED driver power ground input
Connect to a power ground plane
PWM
34
O
PWM driver output, open-drain
Can be used to drive a vibrator or other external functions
RED
55
O
Programmable LED driver, open drain
Connect to RED input of RGB LED
output, current sink output when active.
RESPWRON
21
O
System reset, open-drain output
100-k
external pullup resistor to OUT. RESPWRON pin is LO
when TPS65820 is resetting the system.
RTC_OUT
4
O
Low-leakage LDO output. Can be
1-
F (minimum) capacitor to AGND1 pin or supercap
connected to a super-capacitor or
secondary cell, if used as a RTC backup
output.
SCLK
2
I
I2C interface clock line
2-k
pullup resistor to OUT pin
SDAT
3
I/O
I2C interface data line
2-k
pullup resistor to OUT pin
SIM
5
O
General-purpose LDO output
1-
F (minimum) capacitor to AGND1 pin
SM1
44
I
SM1 synchronous buck converter output
LC filter: 10-
F capacitor to PGND1 pin
voltage sense
SM2
49
I
SM2 synchronous buck converter output
LC filter: 10-
F capacitor to PGND2 pin
voltage sense
SM3
42
I
White LED driver output overvoltage
Connect 1-
F capacitor to PGND3 pin. Connect SM3 pin to the
detection
positive side of white LED ladder.
SM3SW
40
I
Integrated white LED duty cycle switch
Connect to negative side of external LED ladder
input
SYS_IN
31
I
System power bus low-voltage detection
External resistive divider sets minimum system operational
voltage. TPS65820 enters sleep mode when voltage below
minimum system voltage threshold is detected. 1-nF filter
capacitor to AGND1 recommended.
TMR
13
I
Charge safety timer program input
External resistor from TMR pin to AGND1 pin sets the charge
safety timer time-out value
TRSTPWON
20
I
System reset pulse duration setting
100-nF (minimum) capacitor to AGND1. External capacitor
from TRSTPWON pin to AGND1 pin sets RESPWRON pulse
width.
TS
12
I/O
Temperature sense input, current source
Connect to battery pack thermistor to sense battery pack
output
temperature
USB
6
I
USB charge input voltage, connect to
1-
F (minimum) capacitor to AGND1 pin, to minimize
USB port positive power output
overvoltage transients during USB power hot-plug events.
VIN_LDO35
29
–
Input to LDOs 3 to 5
1-
F (minimum) decoupling capacitor to AGND2
VIN_LDO02
35
–
Positive supply input for LDO0, LDO1,
1-
F (minimum) decoupling capacitor to AGND1
LDO2
VIN_SM1
47
–
SM1 synchronous buck converter positive
10-
F capacitor to PGND1 pin
supply input
VIN_SM2
50
–
SM2 synchronous buck converter positive
10-
F capacitor to PGND2 pin
supply input
Exposed
57
–
There is an internal electrical connection between the exposed thermal pad and AGNDn pins of the IC. The
thermal pad
exposed thermal pad must be connected to the same potential as the AGND1 pin on the printed circuit
board. Do not use the thermal pad as the primary ground input for the IC. AGNDn pins must be connected
to a clean ground plane at all times.
Copyright 2006–2008, Texas Instruments Incorporated
19
Product Folder Link(s): TPS65820
相關(guān)PDF資料
PDF描述
TPS65820RSH 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
TRU050-GACHA-47M4570000 PHASE LOCKED LOOP, CDSO16
TRU050-GACNA-12M6240000 PHASE LOCKED LOOP, CDSO16
TRU050-GALNA-20M0000000 PHASE LOCKED LOOP, CDSO16
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