TPS51120

활성

대기 전류 소비가 낮은 4.5~28V, 듀얼 채널 동기형 벅 컨트롤러

지금 주문하기

데이터 시트

document-pdfAcrobat TPS51120 Dual, Synchronous Step-Down Controller With 100-mA Standby Regulators for Notebook System Power datasheet (Rev. C) (영어) PDF | HTML

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대안 비교

비교 대상 장치와 유사한 기능.

TPS51397A

활성

4.5V~24V 입력, 10A 동기식 강압 조절기 Offers a lower IQ and is soft start adjustable with an extended positive operating temperature range in a smaller package.

TPS51120

활성

데이터 시트

지금 주문하기

제품 상세 정보

Rating

Catalog

Topology

Buck

Iout (max) (A)

20

Vin (max) (V)

28

Vin (min) (V)

4.5

Vout (max) (V)

5.5

Vout (min) (V)

1

Control mode

D-CAP, current mode

Features

Enable, Light-load efficiency, Power good, Synchronous rectification

Duty cycle (max) (%)

88

Iq (typ) (A)

0.00075

Number of phases

1

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Topology

Buck

Iout (max) (A)

20

Vin (max) (V)

28

Vin (min) (V)

4.5

Vout (max) (V)

5.5

Vout (min) (V)

1

Control mode

D-CAP, current mode

Features

Enable, Light-load efficiency, Power good, Synchronous rectification

Duty cycle (max) (%)

88

Iq (typ) (A)

0.00075

Number of phases

1

Operating temperature range (°C)

-40 to 85

VQFN (RHB)

32

25 mm² (5 mm × 5 mm)

3.3-V and 5-V 100-mA Bootstrapped Standby
Regulators with Independent Enables
Selectable D-CAP™ Mode Enables Fast Transient
Response Less than 100 ns
Selectable Low Ripple Current Mode
Less than 1% Internal Reference Accuracy
Selectable PWM-only/Auto-skip Modes
Low-side R_DS(on) Loss-less Current Sensing
R_SENSE Accurate Current Sense Option
Internal Soft-Start and Integrated V_OUT Discharge
Transistors
Integrated 2-V Reference
Adaptive Gate Drivers with Integrated Boost Diode
Powergood for Each Channel with Delay Timer
Fault Disable Mode
Supply Input Voltage Range: 4.5 V to 28 V

3.3-V and 5-V 100-mA Bootstrapped Standby
Regulators with Independent Enables
Selectable D-CAP™ Mode Enables Fast Transient
Response Less than 100 ns
Selectable Low Ripple Current Mode
Less than 1% Internal Reference Accuracy
Selectable PWM-only/Auto-skip Modes
Low-side R_DS(on) Loss-less Current Sensing
R_SENSE Accurate Current Sense Option
Internal Soft-Start and Integrated V_OUT Discharge
Transistors
Integrated 2-V Reference
Adaptive Gate Drivers with Integrated Boost Diode
Powergood for Each Channel with Delay Timer
Fault Disable Mode
Supply Input Voltage Range: 4.5 V to 28 V

The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.

The TPS51120 32-pin QFN package is specified from –40°C to 85°C ambient temperature.

The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.

The TPS51120 32-pin QFN package is specified from –40°C to 85°C ambient temperature.

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상위 문서	유형	직함	형식 옵션	최신 영어 버전 다운로드	날짜
*	데이터 시트	TPS51120 Dual, Synchronous Step-Down Controller With 100-mA Standby Regulators for Notebook System Power datasheet (Rev. C)	PDF \| HTML		2015. 1. 29