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SEMTECH sc1592 手册

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资料介绍

The SC1592 is a 3A low dropout high performance
linear voltage regulator, that provides a low voltage, high
current output with a minimum of external components,
utilizing dual supply configuration.
The SC1592 offers a wide input voltage range from 1.25V
to 16V and is ideal for applications that need to convert
down to 0.8V.
Additionally, the SC1592 is fully protected with an externally
programmable current limit, and thermal shutdown.
Also, there is an EN input which enables or shuts down
the device.
The SC1592 voltage regulator is available in 7-lead DDPAK
and SOIC-8L EDP packages.

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SC1592

Low Dropout High Performance

Adjustable Positive Voltage Regulator

POWER MANAGEMENT

Description

Features

The SC1592 is a 3A low dropout high performance Wide input range, V_IN= 1.25V to 16V,

linear voltage regulator, that provides a low voltage, high

current output with a minimum of external components,

utilizing dual supply configuration.

V_CNTL= 3V to 16V

3A Guaranteed Output Current

260mV (typ) @ 3A dropout voltage in dual supply

mode

The SC1592 offers a wide input voltage range from 1.25V

to 16V and is ideal for applications that need to convert

down to 0.8V.

1% Initial Accuracy

Adjustable output voltage, down to 0.8V

Programmable current limiting and thermal

shutdown

Fast transient response

Excellent line and load regulation

Power SO-8 and 7-lead DDPAK

Additionally, the SC1592 is fully protected with an exter-

nally programmable current limit, and thermal shutdown.

Also, there is an EN input which enables or shuts down

the device.

Applications

The SC1592 voltage regulator is available in 7-lead DDPAK

and SOIC-8L EDP packages.

Low voltage logic supplies

Microprocessor and chipset supplies

Split plane microprocessor supplies

Advanced graphics cards supplies

Sound cards and auxiliary power supplies

SMPS post regulator

Typical Application Circuit

+3.3V Vcntl

+1.8V Vout

CNTL

OUT

1uF

66.5

47uF(cer)

SC1592

+2.5V Vin

SENSE

ILIM

GND

V_OUT= (1+

)• V_REF

10uF

V_REF= 0.8V typ.

100

TTL

Revision: January 27, 2004

SC1592

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters

specified in the Electrical Characteristics section is not implied.

Parameter

Symbol

V_IN

Maximum

Units

Power Input Voltage

Control Input Voltage

Output Current

V_CNTL

I_OUT

Power Dissipation

P_D

Internally Limited

Thermal Resistance Junction to Ambient

DDPAK (1sq. in.)

°C/W

θ_JA

SOIC-8L EDP (1sq. in.)

36.5

Thermal Resistance Junction to Case

DDPAK

θ_JC

SOIC-8L EDP

5.5

Junction Temperature Range

T_J

-40 to +125

°C

Storage Temperature Range

T_STG

T_LEAD

ESD

-65 to +150

Lead Temperature (Soldering) 10 Sec.

ESD Rating (Human Body Model)

300

Electrical Characteristics

Values in bold indicate -40°C ^E<^NT_J<^C+^NT1^L25°C.

Unless specified: V_IN= 2.5V, V = V

= 3.3V, V_OUT= 1.8V, I_OUT= 10mA, R_LIM= 100Ω, T_J= T_A= 25°C.

Parameter

Symbol

Test Conditions

V_OUT= V_REF

Min

Typ

Max

Units

Control Voltage

Reference Voltage

Control Pin Current

V_CNTL

V_REF

V_OUT= V_REF

792

800

808

I_{CNTL_EN}

V_CNTL= V = V = 16V

V_OUT=^INV_REF;^ENI_O= 0

_CNTL= V_IN= V_EN= 16V

V_OUT= V_REF; I_O= 3A

Control Pin Current in

Shutdown

I_{CNTL_DIS}

V_CNTL= V_IN= 16V

V_EN= 0

µA

V_INLine Regulation

REG_(LINE)

REG_(CNTL)

2.5V ≤ V_IN≤ 16V

0.01

0.1

0.4

%/V

V_CNTLLine Regulation

3.3V ≤ V_CNTL≤ 16V,

_OUT= V_REF

Load Regulation ⁽¹⁾

Dropout Voltage

REG_(LOAD)

10mA ≤ I_OUT≤ 2A, T_J= 25°C

10mA ≤ I_OUT≤ 3A, -40 < T_J< 125°C

I_OUT= 2A; V_OUT= 0.98 Vnom

0.8

1.4

1.5

V_DO

160

260

320

520

I_OUT= 3A; V_OUT= 0.98 Vnom

2004 Semtech Corp.

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SEMTECH sc1592 手册

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