Datasheet > A8590

A8590

更新时间： 2022-02-26 13:58:15

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
38页	3440K
描述
Wide Input Voltage, 2.4 MHz, 3.0 A Asynchronous Buck Regulator With Low-IQ Standby, Sleep Mode, External Synchronization, and NPOR Output

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A8590 数据手册

Wide Input Voltage, 2.4 MHz, 3.0 AAsynchronous Buck Regulator With

Low-IQ Standby, Sleep Mode, External Synchronization, and NPOR Output

A8590

CHARACTERISTIC PERFORMANCE

Reference Voltage versus Temperature

Switching Frequency versus Temperature

808

806

804

802

800

798

796

794

792

3.50

3.00

2.50

2.00

1.50

1.00

0.20

f_OSC= 2.44 MHz

f_OSC= 1.00 MHz

-50

-25

100

125

150

-50

-25

100

125

150

Temperature (ºC)

VIN UVLO Start and Stop Thresholds versus

Temperature

V_OUTOvervoltage and Undervoltage Thresholds versus

Temperature

3.9

3.8

3.7

3.6

3.5

3.4

3.3

950

900

850

V_OUT(OV)PWM

START, V_INUV(ON)

STOP, V_INUV(OFF)

V_OUT(UV)PWM

800

V_OUT(UV)PFM

750

700

650

-50

-25

100

125

150

-50

-25

100

125

150

Temperature (ºC)

Pulse-by-Pulse Current Limit at t_ON(MIN)PWM

Error Ampliﬁer Transconductance versus Temperature

(I_LIM(TONMIN)) versus Temperature

900

6.2

V_FB> 400 mV

800

6.0

5.8

5.6

5.4

5.2

5.0

4.8

V_FB< 400 mV

700

600

500

400

300

200

100

-40

-20

100

125

150

-50

-25

100

125

150

Temperature (ºC)

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

1...7 8 91011 12 13...38

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