Datasheet > MP4322

MP4322

更新时间： 2024-04-09 19:03:12

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
42页	3702K
描述
36V、2A、低静态电流（IQ）同步降压变换器，具有 42V 负载突降容限且频率可调功能

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MP4322 数据手册

MP4322 – 36V, 2A, LOW-I_Q, SYNC BUCK CONVERTER WITH 42V LOAD DUMP

ELECTRICAL CHARACTERISTICS (continued)

V_IN= 12V, V_EN= 2V, T_J= -40°C to +125°C ⁽¹¹⁾, typical values are at T_J= 25°C, unless otherwise noted.

Parameter

BOOT

Symbol

Condition

Min

Typ

Max

Units

BOOT - SW refresh rising

threshold

V_{BOOT_RISING}

2.5

2.9

2.7

BOOT - SW refresh falling

threshold

V_{BOOT_FALLING}

V_{BOOT_HYS}

2.3

0.2

BOOT - SW refresh hysteresis

Enable (EN)

EN rising threshold

EN falling threshold

EN threshold hysteresis

Soft Start (SS) and VCC

Soft-start time

V_{EN_RISING}

V_{EN_FALLING}

V_{EN_HYS}

0.97

0.8

1.02

0.85

170

1.07

0.9

t_SS

EN high to SS finishes

I_VCC= 0

VCC voltage

V_CC

4.7

5.3

VCC regulation

I_VCC= 30mA

V_CC= 4V

VCC current limit

I_{LIMIT_VCC}

Power Good (PG)

V_OUTrising

V_OUTfalling

V_OUTrising

104

94.5

105.5

107

PG rising threshold (V_FB/ V_REF

)

PG_{VTH_RISING}

91.5

105.5

94.5

108.5

PG falling threshold (V_FB/ V_REF

)

PG_{VTH_FALLING}

107

PG threshold hysteresis

PG_{VTH_HYS}

V_{PG_LOW}

t_{PG_R}

1.5

(V_FB/ V_REF

)

PG output voltage low

PG rising deglitch time

PG falling deglitch time

Protections

I_SINK= 1mA

0.1

0.3

µs

t_{PG_F}

High-side (HS) peak current limit

Low-side (LS) valley current limit

I_{LIMIT_HS}

I_{LIMIT_LS}

Duty cycle = 30%

2.7

3.4

2.7

4.6

3.8

Zero-current detection (ZCD)

threshold

Thermal shutdown ⁽¹²⁾

I_ZCD

-0.05

160

0.05

+0.15

185

T_SD

175

°C

Thermal shutdown hysteresis ⁽¹²⁾

T_{SD_HYS}

Notes:

11) Guaranteed by over-temperature correlation. Not tested in production.

12) Guaranteed by design and characterization. Not tested in production.

MP4322 Rev. 1.0

4/6/2023

MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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