ACT4921QI datasheet(20/35 Pages) ACTIVE-SEMI

부품명	ACT4921QI

상세설명	Power Loss Protection with 6A eFuse

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제조업체	ACTIVE-SEMI [Active-Semi, Inc]

홈페이지	http://www.active-semi.com

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20 / 35 page

ACT4921QI

Rev 1.0, 18-Jan-2018

Innovative PowerTM

www.active-semi.com

ActiveSwitcherTM is a trademark of Active-Semi

20

VIN

VOUT

VSTR

PLI

nIRQ

EN_UV

Buck_UV

Soft Start

Boost On

Supplement

Mode

10ms

Delay

9ms Delay

VB

Figure 4: Operation State

Pin Functions

VIN

VIN is the input the eFuse. Connect a 0.1uF ceramic

capacitor between VIN and PGND. VIN is directly

connected to VOUT in normal operation. The eFuse

disconnects VIN from VOUT when the IC enters

supplement mode.

EN

The EN pin provides a digital input to turn the IC on or

off. When EN is low when input power is applied, the IC

remains disabled. Pulling EN high moves the IC into the

SOFTSTART state. When EN is pulled low while input

power

is

valid,

the

IC

immediately

enters

SUPPLEMENT mode. After the storage capacitor is

depleted, the IC is disabled.

VINS

The VINS pin provides both overvoltage and

undervoltage protection thresholds. The VINS pin

contains two precision comparators with hysteresis. It

can be directly driven from a digital input to turn the

eFuse on and off. The EN pin is typically used with a

resistor divider from VIN to AGND to program an eFuse

startup voltage higher than the IC’s UVLO value. The

eFuse turns on when the input EN is high and the VINS

voltage goes above the VINS_UV_REF threshold.

Once the eFuse is on, it turns off and enters supplement

mode if the VINS pin goes above the VINS_OV_REF

threshold or below the VINS_UV_REF threshold.

The VINS pin should not be left floating. It can be driven

from standard logic signals greater than VINS_UV_REF.

It can also be driven with open-drain logic to provide.

When driving it with an open-drain, ensure that the

pullup voltage is not higher than the VINS_OV_REF

setting.

VINS_UV_REF is fixed at 0.64V. However, the

VINS_OV_REF can be programmed by I2C bits

VINS_OV_REF [2:0].

The default VINS_OV_REF

voltage is set by the IC’s CMI.

유사한 부품 번호 - ACT4921QI

제조업체	부품명	데이터시트	상세설명
Active-Semi, Inc	ACT4910QW	3Mb / 34P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
	ACT4910QW121-T	3Mb / 34P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
	ACT4910QW122-T	3Mb / 34P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
	ACT4911QW	3Mb / 33P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
	ACT4911QW301-T	3Mb / 33P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017

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유사한 설명 - ACT4921QI

제조업체	부품명	데이터시트	상세설명
Active-Semi, Inc	ACT4911QW	3Mb / 33P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
Active-Semi, Inc	ACT4910QW	3Mb / 34P	Power Loss Protection with 6A eFuse Rev 1.0, 15-Sept-2017
Texas Instruments	TPS25942A	3Mb / 54P	[Old version datasheet] 5A eFuse Power MUX with Multiple Protection Modes
Analog Devices	MAX17527A	1Mb / 32P	5.5V to 60V, 6A Power Limiter with OV, UV, Reverse Polarity, Loss of Ground Protection Rev 0; 11/22
Littelfuse	LS2406ERQ23	1Mb / 14P	28V, 6A eFuse with True Reverse Blocking and Fast Role Swap GD. 09/26/22
Littelfuse	LS24062RQ23	1Mb / 16P	28V 6A Bidirectional eFuse with Dual Port Independent Current Limit Setting 2022 Littelfuse, Inc.
Texas Instruments	TPS25940-Q1	3Mb / 46P	[Old version datasheet] 18-V eFuse with Integrated Short-to-Battery Protection
	TPS259250	1Mb / 35P	[Old version datasheet] Simple 5V/12V eFuse Protection Switches
	TPS2663	4Mb / 52P	[Old version datasheet] 60-V, 6-A Power limiting, surge protection industrial eFuse
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ACT4921QI 데이터시트(PDF) 20 Page - Active-Semi, Inc

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유사한 부품 번호 - ACT4921QI

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