SC416 datasheet(1/34 Pages) SEMTECH

Part #	SC416

Description	Dual Synchronous Buck Controller with Tracking Start-up/Shutdown

PDF	34 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

Logo

1 / 34 page

POWER MANAGEMENT

May 17, 2007

1

SC416

Dual Synchronous Buck Controller

with Tracking Start-up/Shutdown

Features

VIN Range 3-25V

Outputs Adjustable from 0.75 to 5.25V, or

Preset Output Voltages:

VOUT1 = 1.8 or 1.5V

VOUT2 = 1.25 or 1.05V

Proportional or Coincident Tracked Start-up and Shut-

down of Both Outputs

Adjustable Soft-start Rates for Each Output

Regulated Shutdown for Each Output

Low Shutdown Power

Constant On-Time for Fast Dynamic Response

Adjustable Switching Frequency

Separated Frequencies for Minimal Switching Interac-

tion:

VOUT1 = up to 600kHz

VOUT2 = up to 720kHz

Power Save or Continuous Operation at Light Load

Over-Voltage and Under-Voltage Fault Protection

Cycle-by-Cycle Valley Current Limit

DC Current Sense Using Low-Side RDSON Sensing, or

RSENSE In Source of Low-Side MOSFET for Greater

Accuracy

Separate Power Good Outputs

Separate Enable/Power Save Inputs

3.1A Non-Overlapping Gate Drive

SmartDriveTM for High-side MOSFET

MLP 4x4 24 Pin Lead-free Package

Industrial Temperature Range

WEEE and RoHS Compliant

Applications

Notebook and Sub-Notebook Graphics

Voltage Controllers

Tablet PCs

Embedded Applications

•

Description

The SC416 is a versatile, constant on-time, pseudo-

fixed-frequency, dual synchronous buck PWM control-

ler intended for notebook computers and other battery

operated portable devices. The SC416 contains all the

features needed to provide cost-effective control of two

independent switchmode power supplies.

The SC416 provides adjustable voltage tracking during

start-up and shut-down, making it an effective solution

for a variety of applications where the voltage differen-

tial between supply rails must meet defined limits dur-

ing all operating conditions including start-up and shut-

down. The SC416 supports proportional tracking which

gives equal start-up and shut-down times for both out-

puts, and can also provide coincident tracking where the

two output voltages are equal during the lower voltage’s

start-up and shut-down ramp.

The two DC outputs are adjustable from 0.75V to 5.25V.

Additional features for each output include cycle-by-

cycle current limit, voltage soft-start, under-voltage and

over-voltage protection, programmable over-current

protection, regulated shutdown, selectable power save

and non-overlapping gate drive. The SC416 provides

two enable/power save inputs, two soft-start inputs, two

power good outputs and an on-time adjust input.

The constant on-time topology provides fast dynamic

response. The excellent transient response means that

SC416 based solutions require less output capacitance

than competing fixed frequency converters. Switching

frequency is constant until a step in load or line voltage

occurs, at which time the pulse density and frequency

moves to counter the change in output voltage. After

the transient event, the controller frequency returns to

steady state operation. At light loads with power save

enabled, the SC416 reduces switching frequency for im-

proved efficiency.

Similar Part No. - SC416

Manufacturer	Part #	Datasheet	Description
Mallory Sonalert Produc...	SC416R	52Kb / 1P	Voltage Rating 4 to 16 VDC

More results

Similar Description - SC416

Manufacturer	Part #	Datasheet	Description
Linear Technology	LTC3802	346Kb / 28P	Dual 550kHz Synchronous 2-Phase DC/DC Controller with Programmable Up/Down Tracking
Texas Instruments	TPS40056	769Kb / 31P	WIDE-INPUT SYNCHRONOUS, TRACKING BUCK CONTROLLER
Semtech Corporation	SC4510	733Kb / 16P	High Performance Synchronous Buck Controller With Reference Tracking
Maxim Integrated Produc...	MAX15002	562Kb / 30P	Dual-Output Buck Controller with Tracking/Sequencing Rev 0; 12/07
Analog Devices	ADP1877	3Mb / 32P	Dual Output Synchronous Buck PWM Controller With Tracking REV. 0
Maxim Integrated Produc...	MAX15002	505Kb / 29P	Dual-Output Buck Controller with Tracking/Sequencing Rev 2; 10/12
ON Semiconductor	NCP5425SOEVB	178Kb / 22P	Dual Synchronous Buck Controller July, 2006 ??Rev. 9
Linear Technology	LTC3802	356Kb / 28P	Dual 550kHz Synchronous 2-Phase DC/DC Controller with Programmable Up/Down Tracking
ON Semiconductor	NCP5424A	134Kb / 20P	Dual Synchronous Buck Controller August, 2003 ??Rev. 0
Texas Instruments	TPS40056	1Mb / 33P	WIDE-INPUT SYNCHRONOUS, TRACKING BUCK CONTROLLER

More results

SC416 Datasheet(PDF) 1 Page - Semtech Corporation

SC416 Datasheet(HTML) 1 Page - Semtech Corporation

Similar Part No. - SC416

Similar Description - SC416

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

Datasheet Download

Link URL