参数资料
型号: TPS54162QPWPRQ1
厂商: TEXAS INSTRUMENTS INC
元件分类: 稳压器
英文描述: 3 A SWITCHING REGULATOR, 2200 kHz SWITCHING FREQ-MAX, PDSO20
封装: GREEN, PLASTIC, HTSSOP-20
文件页数: 34/41页
文件大小: 2414K
代理商: TPS54162QPWPRQ1
SLVSA32C – OCTOBER 2009 – REVISED MAY 2010
www.ti.com
DC ELECTRICAL CHARACTERISTICS
VIN = 7 V to 48 V, EN = VIN, TJ = –40°C to 150°C (unless otherwise noted)
TEST
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
INPUT POWER SUPPLY
Normal mode: after initial start up
3.6
48
V
Falling threshold
8
V
(LPM disabled)
Info
VIN
Supply voltage on VIN
Rising threshold
Low-power mode
8.5
V
(LPM activated)
High voltage threshold
29
31
34
V
(LPM disabled)
Quiescent current,
Open loop test – maximum duty cycle
PT
Iq-Normal
5
10
mA
normal mode
VIN = 7 V to 48 V
TA = 25°C
50
70
A
ILoad < 1 mA, VIN = 12 V
–40 < TJ < 150°C
75
A
Quiescent current,
PT
Iq-LPM
low-power mode
TA = 25°C
75
A
ILoad < 1 mA, VIN = 24 V
–40 < TJ < 150°C
75
A
PT
ISD
Shutdown current
EN = 0 V, device is off
TA = 25°C, VIN = 12 V
1
4
A
TRANSITION TIMES (LOW POWER – NORMAL MODES)
Transition delay, normal
CT
td1
VIN = 12 V, VReg = 5 V, ILoad = 1 A to 1 mA
100
s
mode to low-power mode
Transition delay, low-power
CT
td2
VIN = 12 V, VReg = 5 V ILoad = 1 mA to 1 A
5
s
mode to normal mode
SWITCH MODE SUPPLY; VReg
Info
VReg
Regulator output
VSENSE = 0.8 Vref
0.9
18
V
CT
VSENSE
Feedback voltage
VReg = 0.9 V to 18 V (open loop)
0.788
0.8
0.812
V
PT
RDS(ON)
Internal switch resistance
Measured across VIN and PH, ILoad = 500 mA
500
m
Switch current limit, cycle by
Info
ICL
VIN = 12 V
1.3
2.15
3
A
cycle
Info
tON-Min
Duty cycle pulse width
Bench CHAR only
50
100
150
ns
Info
tOFF-Min
Bench CHAR only
100
200
250
PT
fsw
Switching frequency
Set using external resistor on RT pin
0.2
2.2
MHz
PT
Internal oscillator frequency
fsw
–10
10
%
tolerance
Info
ISink
Start-up condition
OV_TH = 0 V, VReg = 10 V
1
mA
Info
ILimit
Prevent overshoot
0 V < OV_TH < 0.8 V, VReg = 10 V
80
mA
PT: Production tested
CT: Characterization tested only, not production tested
Info: User information only, not production tested
4
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS54162-Q1
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