TPS51225C

활성

VREG5 상시 가동 LDO를 지원하는 5.5V~24V, 듀얼 동기 벅 컨트롤러

지금 주문하기

데이터 시트

document-pdfAcrobat Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs datasheet (Rev. B) (영어)

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대안 비교

비교 대상 장치와 유사한 기능.

TPS51397A

활성

4.5V~24V 입력, 10A 동기식 강압 조절기 Faster switching frequency and extended positive operating temperature range.

TPS51225C

활성

데이터 시트

지금 주문하기

제품 상세 정보

Rating

Catalog

Topology

Buck

Iout (max) (A)

10

Vin (max) (V)

24

Vin (min) (V)

5.5

Vout (max) (V)

5.5

Vout (min) (V)

4.5

Control mode

D-CAP

Features

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

Duty cycle (max) (%)

90

Iq (typ) (A)

0.0009

Number of phases

1

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Topology

Buck

Iout (max) (A)

10

Vin (max) (V)

24

Vin (min) (V)

5.5

Vout (max) (V)

5.5

Vout (min) (V)

4.5

Control mode

D-CAP

Features

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

Duty cycle (max) (%)

90

Iq (typ) (A)

0.0009

Number of phases

1

Operating temperature range (°C)

-40 to 85

WQFN (RUK)

20

9 mm² (3 mm × 3 mm)

Input Voltage Range: 5.5 V to 24 V
Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
Built-in, 100-mA, 5-V and 3.3-V LDOs
Clock Output for Charge-Pump
±1% Reference Accuracy
Adaptive On-time D-CAP Mode Control Architecture with 300kHz/355kHz Frequency Setting
Auto-skip Light Load Operation (TPS51225/C)
OOA Light Load Operation (TPS51225B)
Internal 0.8-ms Voltage Servo Soft-Start
Low-Side R_DS(on)Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient
Built-in Output Discharge Function
Separate Enable Input for Switchers (TPS51225/B/C)
Dedicated OC Setting Terminals
Power Good Indicator
OVP/UVP/OCP Protection
Non-latch UVLO/OTP Protection
20-Pin, 3 mm × 3 mm, QFN (RUK)

Input Voltage Range: 5.5 V to 24 V
Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
Built-in, 100-mA, 5-V and 3.3-V LDOs
Clock Output for Charge-Pump
±1% Reference Accuracy
Adaptive On-time D-CAP Mode Control Architecture with 300kHz/355kHz Frequency Setting
Auto-skip Light Load Operation (TPS51225/C)
OOA Light Load Operation (TPS51225B)
Internal 0.8-ms Voltage Servo Soft-Start
Low-Side R_DS(on)Current Sensing Scheme with 4500 ppm/°C Temperature Coefficient
Built-in Output Discharge Function
Separate Enable Input for Switchers (TPS51225/B/C)
Dedicated OC Setting Terminals
Power Good Indicator
OVP/UVP/OCP Protection
Non-latch UVLO/OTP Protection
20-Pin, 3 mm × 3 mm, QFN (RUK)

The TPS51225/B/C is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51225/B/C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5.5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51225/B/C is available in a 20-pin, 3 mm × 3 mm, QFN package and is specified from –40°C to 85°C.

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2개 모두 보기

상위 문서	유형	직함	형식 옵션	최신 영어 버전 다운로드	날짜
*	데이터 시트	Dual Synchronous Step-Down Controller with 5-V and 3.3-V LDOs datasheet (Rev. B)			2012. 9. 9
	애플리케이션 노트	Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A)			2019. 4. 1