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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： | 1/41页 |
| 文件大小： | 2414K |
| 代理商： | TPS54162QPWPRQ1 |
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VIN
EN
Cdly
GND
OV_TH
COMP
VSENSE
PH
V
Reg
VBATT
SS
SYNC
LPM
VIN
BOOT
Rslew
RT/CLK
VReg
R1
R4
R6
C1
C3
C4
C5
L
D1
D2
C7
R9
C8
R11
R10
RST_TH
TPS54162
RST
RESET
R8
R7
C2
C6
R5
R2
R3
R12
0
10
20
30
40
50
60
70
80
90
0.05
0.25
0.5
0.75
1
ILoad - Load Current - A
h
-Efficiency
-
%
VIN = 14 V
VIN = 7 V
V
= 5 V
f
= 500 kHz
L = 22 H
C = 100 F
Rslew = 30 k
T = 25°C
Reg
sw
A
W
www.ti.com
SLVSA32C – OCTOBER 2009 – REVISED MAY 2010
1-A 60-V STEP-DOWN DC/DC CONVERTER WITH LOW QUIESCENT CURRENT
Check for Samples: TPS54162-Q1
1
FEATURES
Asynchronous Switch Mode Regulator
Programmable Overvoltage, Undervoltage
Output Monitor
3.6 V to 48 V Operating Range, Withstands
Transients up to 60 V
Thermal Sensing and Shutdown
1 A Maximum Load Current
Switch Current Limit Protection
50 A Typical Quiescent Current
Short Circuit and Overcurrent Protection of
FET
200 kHz to 2.2 MHz Switching Frequency
Junction Temperature Range: –40°C to 150°C
0.8 V ± 1.5% Voltage Reference
20-Pin HTSSOP PowerPAD Package
High Voltage Tolerant Enable Input
Soft Start on Enable Cycle
APPLICATIONS
Slew Rate Control on Internal Power Switch
Qualified for Automotive Applications
Low-Power Mode for Light Load Conditions
Automotive Telematics
Programmable Delay for Power-On Reset
Navigation Systems
External Compensation for Error Amplifier
In-Dash Instrumentation
Reset Function Filter Time for Fast Negative
Battery Powered Applications
Transients
DESCRIPTION
The TPS54162 is a step-down switch-mode power supply with a voltage supervisor and an integrated NMOS
switching FET. Integrated input voltage line feed forward topology improves line transient regulation of the
voltage mode buck regulator. The regulator has a cycle-by-cycle current limit. The device also features
low-power mode operation under light load conditons which reduces the supply current to 50 A (typical). By
pulling the EN pin low, the supply shutdown current is reduced to 1 A (typical).
An open drain reset signal indicates when the nominal output drops below the reset threshold set by an external
resistor divider network. The output voltage start up ramp is controlled by a soft start capacitor. There is an
internal undervoltage shut down which is activated when the input supply ramps down to 2.6 V. The device is
protected during an overload condition on output by frequency fold back operation, and also has a thermal
shutdown protection.
TYPICAL APPLICATION
TYPICAL CONVERTER EFFICIENCY
Figure 1.
Figure 2.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright 2009–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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