ISL85402 Просмотр технического описания (PDF) - Intersil

Номер в каталоге

Компоненты Описание

производитель

ISL85402

2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter

Intersil 

ISL85402

Electrical Specifications Refer to “Block Diagram” on page 4 and “Typical Application Schematics” on page 5. Operating

Conditions Unless Otherwise Noted: VIN = 12V, or VCC = 4.5V ±10%, TA = -40°C to +105°C. Typicals are at TA = +25°C. Boldface limits apply

over the operating temperature range, -40°C to +105°C. (Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

MAX

(Note 6) TYP (Note 6) UNITS

POWER-ON RESET

Rising VCC POR Threshold

Falling VCC POR Threshold

VCC POR Hysteresis

ENABLE

VPORH_RISE

VPORL_FALL

VPORL_HYS

2.82 2.9 3.05 V

2.6 2.8

V

0.3

V

Required Enable On Voltage

Required Enable Off Voltage

EN Pull-up Current

OSCILLATOR

VENH

VENL

IEN_PULLUP

EN Left Floating, VIN = 24V

EN Left Floating, VIN = 12V

EN Left Floating, VIN = 5V

2

V

0.8

V

0.8

µA

0.5

µA

0.25

µA

PWM Frequency

FOSC

RFS = 665kΩ

RFS = 51.1kΩ

FS Pin Connected to VCC or Floating or GND

160 200 240 kHz

1950 2200 2450 kHz

450 500 550 kHz

MIN ON Time

MIN OFF Time

SYNCHRONIZATION

tMIN_ON

tMIN_OFF

130 225 ns

210 325 ns

Input High Threshold

VIH

2

V

Input Low Threshold

VIL

0.5

V

Input Minimum Pulse Width

25

ns

Input Impedance

100

kΩ

Input Minimum Frequency Divided by Free

1.1

Running Frequency

Input Maximum Frequency Divided by Free

1.6

Running Frequency

Output Pulse Width

Output Pulse High

CSYNC = 100pF

VOH

RLOAD = 1kΩ

100

ns

VCC-

V

0.25

Output Pulse Low

VOL

GND

V

REFERENCE VOLTAGE

Reference Voltage

System Accuracy

VREF

0.8

V

-1.0

+1.0 %

FB Pin Source Current

5

nA

Soft-start

Soft-Start Current

ISS

ERROR AMPLIFIER

3

5

7

µA

Unity Gain-Bandwidth

DC Gain

Maximum Output Voltage

CLOAD = 50pF

CLOAD = 50pF

10

MHz

88

dB

3.6

V

7

FN7640.1

April 25, 2013

Share Link: