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TPS53129 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS53129
Description  TPS53129 Dual Synchronous Step-Down Controller with Auto-Skip Eco-mode??for Low Voltage Power Rails
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS53129 Fiches technique(HTML) 1 Page - Texas Instruments

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TPS53129PW
TSSOP24
SW1
DRVL1
DRVH1
VBST1
EN1
VFB2
VO2
VO1
VFB1
GND
TRIP2
VREG5
TRIP1
PGND1
3
24
8
21
22
23
15
9
16
18
19
20
5
7
1
10
11
VIN
SS2
DRVH2
VBST2
EN2
PGND2
DRVL2
SW2 13
14
12
V5FILT
17
SS1
6
2
4
PGND
PGND
SGND
PGND
SGND
Input Voltage
4.5V to 24V
C9
10uF
VO1
1.8V/4A
C1
22uFx2
C3
10uF
Q1
FDS8878
L1
SPM6530T
1.5uH
Q2
FDS8690
C2
0.1uF
R
4.3k
R6
4.7k
C
1uF
C7
4.7uF
L2
SPM6530T
1.5uH
VO2
1.05V/4A
C6
10uF
Q3
FDS8878
Q4
FDS8690
C5
0.1uF
R2
10k
R1
13.5k
R5
10k
R4
3.63k
C11
4700pF
C10
4700pF
C4
22uFx2
TPS53129 RGE
(QFN )
DRVH2
VBST2
EN2
SW1
DRVL1
DRVH1
VBST1
EN1
PGND2
PGND1
DRVL2
SW2
C3
10uF
VO2
1.05V/4A
C5
0.1uF
Input Voltage
PGND
C4
22uFx2
10uF
C6
10uF
L1
PGND
Q3
FDS8878
R4
3.63k
R5
10k
PGND
SGND
R6
4.7k
24
22
23
19
20
21
13
14
15
16
17
18
8
9
10
11
12
7
1
2
3
4
5
6
Power PAD
PGND
SGND
4.5V to 24V
VO1
1.8V/4A
Q4
FDS8690
Q1
FDS8878
C9
Q2
FDS8690
L2
SPM6530T
1.5uH
L1
SPM6530T
1.5uH
C2
0.1uF
R
4.3k
R2
10k
C
1uF
C7
4.7uF
R1
13.5k
C1
22uFx2
C11
4700pF
C10
4700pF
Product
Folder
Sample &
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Technical
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TPS53129
SLVSAE6A – JULY 2010 – REVISED AUGUST 2014
TPS53129 Dual Synchronous Step-Down Controller with Auto-Skip
Eco-mode™ for Low Voltage Power Rails
1 Features
3 Description
The TPS53129 is a dual, adaptive on-time D-CAP2™
1
D-CAP2™ Mode Control
mode synchronous buck controller. The TPS53129
Fast Transient Response
enables system designers to complete the suite of
No External Parts Required for Loop
various end equipment’s power bus regulators with
Compensation
cost effective, low component count, and low standby
current solution. The main control loop for the
Compatible With Ceramic Output Capacitors
TPS53129 uses the D-CAP2™ mode control which
High Initial Reference Accuracy (±1%)
provides a very fast transient response with no
Low Output Ripple
external components. The TPS53129 also has a
circuit that enables the device to adapt to both low
Wide Input Voltage Range: 4.5 V to 24 V
equivalent series resistance (ESR) output capacitors
Output Voltage Range: 0.76 V to 5.5 V
such as POSCAP or SP-CAP, and ultra-low ESR,
Low-Side RDS(ON) Loss-Less Current Sensing
ceramic capacitors. The fixed frequency emulated
adaptive on-time control supports seamless operation
Adaptive Gate Drivers with Integrated Boost Diode
between PWM mode at heavy load condition and
Adjustable Soft Start
reduced frequency operation at light load for high
Non-Sinking Pre-Biased Soft Start
efficiency down to milliampere range.The device
700-kHz Switching Frequency
provides convenient and efficient operation with input
voltages from 4.5 V to 24 V and output voltages from
Cycle-by-Cycle Over-Current Limiting Control
0.76 V to 5.5 V.
30-mV to 300-mV OCP Threshold Voltage
The TPS53129 is available in 4-mm x 4-mm 24-pin
Thermally Compensated OCP by 4000 ppm/°C at
QFN (RGE) or 24-pin TSSOP (PW) packages, and is
ITRIP
specified from -40°C to 85°C ambient temperature
Auto-Skip Eco-mode™ for High Efficiency at Light
range.
Load
Device Information(1)
2 Applications
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Point-of-Load Regulation in Low Power Systems
VQFN (24)
4.00 mm x 4.00 mm
TPS53129
for Wide Range of Applications
TSSOP (24)
4.40 mm x 7.80 mm
Digital TV Power Supply
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Networking Home Terminal
Digital Set-Top Box (STB)
DVD Player/Recorder
Gaming Consoles
4 Simplified Schematics
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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