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

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

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

ELECTRICAL CHARACTERISTICS (continued): valid at 4.0 V ≤ V_IN≤ 35 V; –40ºC ≤ T_A= T_J≤ 150ºC; unless otherwise

speciﬁed.

Characteristics

Error Amplifier

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Feedback Input Bias Current⁷

Open Loop Voltage Gain

I_FB

–38

–

–16

–

A_VOL

V_COMP= 1.2 V

400 mV < V_FB

500

275

–

750

375

±75

950

475

–

µA/V

µA

Transconductance

g_m

0 V < V_FB< 400 mV

V_COMP= 1.2 V

Output Current

I_EA

COMP Pull-Down Resistance

Pulse Width Modulation (PWM)

PWM Ramp Offset

R_COMP

FAULT = 1 or HICCUP = 1

–

kΩ

PWM_OFFS

V_COMPlevel required for 0% duty cycle

–

400

–

12 V < V_IN< 16 V, I_OUT= 1 A, V_BOOT– V_SW

4.5 V

Minimum Controllable PWM On-Time

t_ON(MIN)PWM

135

Minimum Switch Off-Time

COMP to SW Current Gain

t_OFF(MIN)PWM

g_mPOWER

–

130

–

4.0

A/V

f_OSC= 2.44 MHz

2.31

0.66

0.15

3.30

1.00

0.22

4.30

1.32

0.29

A/µs

Slope Compensation⁸

S_E

_OSC= 1.00 MHz

_OSC= 252 kHz

MOSFET Parameters⁶

T_J=25ºC, V_BOOT– V_SW= 4.5 V, I_DS= 0.4 A

T_J=150ºC, V_BOOT– V_SW= 4.5 V, I_DS= 0.4 A

–

110

190

125

215

mΩ

High-Side MOSFET On-Resistance⁹

R_DS(on)HS

T_J< 85°C, V_SLEEP≤ 0.5 V, V_SW= 0 V, V_IN

16 V

–

µA

High-Side MOSFET Leakage^7,10

I_lkg(HS)

T_J≤ 150°C, V_SLEEP≤ 0.5 V, V_SW= 0 V, V_IN

16 V

150

SW Node Slew Rate⁸

SR_SW

12 V < V_IN< 16 V

–

0.72

–

V/ns

Low-Side MOSFET On-Resistance⁹

PWM Switching Frequency

R_DS(on)LS

T_J= 25ºC, V_IN≥ 6 V, I_DS= 0.1 A

R_FSET= 8.06 kΩ, V_PWM/PFM= high

R_FSET= 23.7 kΩ, V_PWM/PFM= high

R_FSET= 102 kΩ, V_PWM/PFM= high

2.20

0.90

–

2.44

1.00

252

2.70

1.10

–

MHz

kHz

Base PWM Switching Frequency

f_OSC

PWM Synchronization Timing

1.2 ×

f_OSC(typ)

1.5 ×

f_OSC(typ)

Synchronization Frequency Range

f_SYNC(MULT)

–

Synchronized PWM Frequency

Synchronization Input Duty Cycle

Synchronization Input Pulse Width

Synchronization Input Rise Time⁸

Synchronization Input Fall Time⁸

f_SYNC(PWM)

D_SYNC

t_wSYNC

t_rSYNC

–

2.9

–

MHz

200

–

t_fSYNC

–

Continued on next page...

⁶Thermally limited depending on input voltage, output voltage, duty cycle, regulator load currents, PCB layout, and airﬂow.

⁷Negative current is deﬁned as coming out of the node or pin, positive current is deﬁned as going into the node or pin.

⁸Ensured by design and characterization, not production tested.

⁹Performance at 25°C ensured by design and characterization, not production tested.

¹⁰Performance at 85°C ensured by design and characterization, not production tested.

Allegro MicroSystems, LLC

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

1...4 5 678 9 10...38

下载PDF

与A8590相关器件

型号	品牌	描述	获取价格	数据表
A8590KLPTR-T	ALLEGRO	Wide Input Voltage, 2.4 MHz, 3.0 A Asynchronous Buck Regulator With Low-IQ Standby, Sleep	获取价格
A8591KEJTR-J	ALLEGRO	Switching Regulator,	获取价格
A8591KEJTR-J-1	ALLEGRO	Switching Regulator,	获取价格
A-859T	MOLEX	Avikrimp™ Snap Plug, for 18-22 AWG Wire, Myla	获取价格
A8600	ALLEGRO	Designed to provide the power supply requirements of next generation car audio and infotai	获取价格
A8600EJPTR-T	ALLEGRO	Designed to provide the power supply requirements of next generation car audio and infotai	获取价格

与A8590相关文章

PAM8403音频功率放大器：资料手册参数分析
2024-05-09

3
LAN8720以太网收发器：资料手册参数分析
2024-05-09

4
SI2301 N沟道MOSFET：资料手册参数分析
2024-05-08

13
ADC0809逐次逼近寄存器型模数转换器：资料手册参数分析
2024-05-08

7

产品中心

服务支持

精选活动

关于我们

帮助中心

A8590

A8590 数据手册

与A8590相关器件

与A8590相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

A8590

A8590 数据手册

与A8590相关器件

与A8590相关文章

您还可以找

您在本页遇到什么问题？