ISL85403 データシートの表示（PDF） - Intersil

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ISL85403

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

Intersil 

ISL85403

Electrical Specifications Refer to “Block Diagram” on page 5 and “Typical Application Schematics” on page 6. 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 across 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

Enable On Voltage

Enable Off voltage

EN Pull-up Current

OSCILLATOR

VENH

VENL

IEN_PULLUP

VEN = 1.2V, VIN = 24V

VEN = 1.2V, VIN = 12V

VEN = 1.2V, VIN = 5V

1.7

1.5

1.2

0.9

V

1

V

µA

µA

µA

PWM Frequency

FOSC

RT = 665kΩ

RT = 51.1kΩ

FS pin connected to VCC or floating or GND

160

1870

450

200

2200

500

240 kHz

2530 kHz

550 kHz

MIN ON Time

MIN OFF Time

SYNCHRONIZATION

tMIN_ON

tMIN_OFF

130 225 ns

210 330 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

Output Pulse Low

CSYNC = 100pF

VOH

RLOAD = 1kΩ

VOL

100

ns

VCC-0.25

V

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

Minimum Output Voltage

0.5

V

Slew Rate

SR

CLOAD = 50pF

5

V/µs

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8

FN8631.1

March 13, 2015

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