TPS53126PWR ,4.5V-24V input Synchronous DCAP2 Mode Dual Step-Down Controller 24-TSSOP -40 to 85Electrical Characteristics...... 512.1 Trademarks..... 237.6 Timing Requirements... 612.2 Electrost ..
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TPS53126PWR-TPS53126RGER
Dual Sync. Step-Down Controller for Low Voltage Power Rails, 350kHz or 700kHz Frequency
SW1
DRVL1
DRVH1
VBST1
EN1
VFB2
VO2
VO1
VFB1
GND
TRIP2
VREG5
TRIP1
PGND13 165
VIN
EN2
V5FILT
TEST1
PGND
PGND
InputVoltage
4.5Vto24V
13kW
10kW
3.52kW
VO1
1.8V/4A
0.1Fm
FDS8878 C3Fm
22F4m´
FDS8690
3.3kW
SPM6530T
1.5Hm
4.7Fm
10Fm
TPS53126
(TSSOP)
VBST2
VBST1
EN1
VFB2
VO1
VFB1
GND
InputVoltage
PGND
PGND2345
SGND
TEST1
4.5Vto24V C9
10FmFm´
3.52kW
10kW
10kW
13kW
FDS8878
FDS8690
0.1Fm
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TPS53126SLUS909B –MAY 2009–REVISED AUGUST 2014
TPS53126 Dual Synchronous Step-down Controller For Low Voltage Power Rails Features 3 DescriptionThe TPS53126 isa dual, adaptive on-time, D- D-CAP2™ Mode Control CAP2™ mode synchronous Buck controller. The– Fast Transient Response TPS53126 enables system designersto complete the No External Parts Required For Loop suite of various end equipment's power bus
Compensation regulators with a cost effective, low external
component count, and low standby current solution.– Compatible with Ceramic Output Capacitors The main control loop for the TPS53126 uses theD-• High Initial Reference Accuracy (±1%) CAP2™ mode control which providesa very fast Low Output Ripple transient response withno external components. The
TPS53126 also hasa proprietary circuit that enables• Wide Input Voltage Range: 4.5Vto 24V the device to adaptto both low equivalent series• Output Voltage Range: 0.76Vto 5.5V resistance (ESR) output capacitors, such as• Low-Side RDS(on) Loss-Less Current Sensing POSCAP or SP-CAP, and ultra-low ESR ceramic
capacitors. The device provides convenient and• Adaptive Gate Drivers with Integrated Boost Diode
efficient operation with input voltages from 4.5Vto24• Internal 1.2 ms Voltage-Servo Soft Start V and output voltages from 0.76Vto 5.5V.• Pre-Biased Soft Start
The TPS53126is availablein 4mmx 4mm 24 pin• Selectable Switching Frequency: 350 kHz/ 700 VQFN (RGE)or 24 pin TSSOP (PW) packages andiskHz specified from –40°Cto 85°C ambient temperature• Cycle-by-Cycle Over-Current Limiting Control range. 30 mVto 300 mV OCP Threshold Voltage
Device Information(1)• Thermally Compensated OCPby 4000 ppm/C°atITRIP
2 Applications(1) Forall available packages, see the orderable addendumat• Point-of-Load Regulationin Low Power Systems
the endofthe datasheet.for Wide Rangeof Applications Digital TV Power Supply Networking Home Terminal Digital Set Top Box (STB) DVD Player/Recorder Gaming Consoles and Other
Simplified Schematics
