FAN5355(2010) View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

FAN5355
(Rev.:2010)

1A / 0.8A, 3MHz Digitally Programmable Regulator

Fairchild Semiconductor 

Electrical Specifications (Continued)

VIN = 3.6V, 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

6-Bit DAC

Differential Nonlinearity

Monotonicity Assured by Design

Timing

I2CEN

EN HIGH to I2C Start

tV(L-H)

VOUT LOW to HIGH Settling

Soft Start

RLOAD = 75Ω, Transition from 1.0 to 1.5375V

VOUT Settled to within 2% of Set Point

tSS

VSLEW

Regulator Enable

to Regulated VOUT

Option 06

All Other

Options

Soft-start VOUT Slew Rate(10)

RLOAD > 5Ω, to VOUT = 1.8000V

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

Note:

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

Min. Typ. Max. Units

0.8

LSB

250

μs

7

μs

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. 1.0.6

www.fairchildsemi.com

Share Link: