FAN5355 データシートの表示（PDF） - ON Semiconductor

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FAN5355

1.1 A / 1 A / 0.8 A, 3 MHz Digitally Programmable Regulator

ON Semiconductor 

Electrical Specifications (Continued)

VIN = 3.6 V, EN = VIN, VSEL = VIN, SYNC = GND, VSEL0(6) bit = 1, CONTROL2[4:3] = 00. TA = -40°C to +85°C, unless otherwise

noted. Typical values are at TA = 25°C. Circuit and components according to Figure 1.

Symbol Parameter

Conditions

Min. Typ. Max. Units

6-Bit DAC

Differential Nonlinearity

Timing

I2CEN EN HIGH to I2C Start

tV(L-H) VOUT LOW to HIGH Settling

Soft Start

Monotonicity Assured by Design

RLOAD = 75 Ω, Transition from 1.0 to

1.5375 V,

VOUT Settled to within 2% of Set Point

0.8

LSB

250

μs

7

μs

Regulator

Option 06 RLOAD > 5 Ω, to VOUT = 1.8000 V

tSS

Enable to

All Other

Regulated VOUT Options

RLOAD > 5 Ω, to VOUT = Power-up Default

VSLEW Soft-start VOUT Slew Rate(10)

Note:

10. Option 03 and 06 slew rates are 35.5 V/ms during the first 16 μs of soft start.

170

210

140

180

18.75

μs

μs

V/ms

AVIN

EN

VSEL

SYNC

SDA

SCL

I2C

INTERFACE

AND LOGIC

3 MHz Osc

Q1

7-bit REF

DAC

SOFT START

Q2

FPWM MODULATOR

EN_REG

CLK

Figure 4. Block Diagram

PVIN

VIN

CIN

SW

L OUT

VOUT

COUT

PGND

VOUT

AGND

© 2008 Fairchild Semiconductor Corporation

7

FAN5355 • Rev. 1.1.7

www.fairchildsemi.com

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