SC600DIMSTRT datasheet(9/19 Pages) SEMTECH

Part #	SC600DIMSTRT

Description	mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output

Download	19 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

Logo

9 / 19 page

9

www.semtech.com

POWER MANAGEMENT

SC600

Applications Information (Cont.)

Brightness Control with PWM Input

Brightness control using a PWM input can be achieved

with the application circuit below. Note that by connecting

CX8 to the PWM signal the switching frequency is changed

as the PWM signal changes. The charge pump operates

at 262kHz during the on-time when there is a demand for

current, and then changes to 32kHz when there is no load

current. This is done to save battery power by taking ad-

vantage of the lower 280μA quiescent current at 32kHz.

The ripple voltage seen at the output is reasonable for

LED applications, but the output capacitance can be in-

creased to reduce the ripple if required. The sum of the

LED currents for this circuit is 55mA during the on-time.

White LED Driver Circuit with PWM Brightness Control

Voltage Waveforms for LED Driver Circuit

Cin

1uF

2.7V to 6. 5V

Cbucket1

1uF

Cbucket2

1uF

VI N

EN

CD4

CX8

GN D

CF2-

CF2+

CF1-

CF1 +

VOUT

3

6

4

5

8

7

10

9

2

1

U1

Cout

1uF

PW M

10 0

100

5.0 V

Ripple Voltage vs. Input Voltage

0

50

100

150

200

250

300

350

400

450

500

2.8

3.3

3.8

4.3

4.8

5.3

5.8

Input Voltage [V]

Vout p-p

Vin p-p

Battery Current vs. Input Voltage

for Various Duty Cycles

0

20

40

60

80

100

120

2.83

3.23.43.63.84

Input Voltage [V]

89.20%

70.30%

50.20%

30.20%

Similar Part No. - SC600DIMSTRT

Manufacturer	Part #	Datasheet	Description
Switchcraft, Inc.	SC600	225Kb / 1P	600, 700, 702, 800 & 900 Series Overview
Extech Instruments Corp...	SC600	412Kb / 1P	Electronic Counting Scale/Balance
Socay Electornics Co., ...	SC600-110	462Kb / 4P	Radial Lead Resettable Polymer PTCs
	SC600-150	462Kb / 4P	Radial Lead Resettable Polymer PTCs
	SC600-160	462Kb / 4P	Radial Lead Resettable Polymer PTCs

More results

Similar Description - SC600DIMSTRT

Manufacturer	Part #	Datasheet	Description
Semtech Corporation	SC603	793Kb / 12P	CHARGE PUMP REGULATOR WITH SELECTABLE 5.0V/4.5V OUTPUT
Rohm	BD1603NUV	309Kb / 6P	Charge Pump Regulator with Selectable 5.0V/4.5V Output for mobile
Rohm	BD9102FVM	1Mb / 29P	4.0V(or 4.5V) to 5.5V, 0.8A 1ch Synchronous Buck Converter Integrated FET
Qorvo, Inc	RF6559	692Kb / 10P	4.0V TO 4.5V, 915MHZ ISM BAND TRANSMIT/RECEIVE MODULE
RF Micro Devices	RF6559	692Kb / 10P	4.0V TO 4.5V, 915MHZ ISM BAND TRANSMIT/RECEIVE MODULE
List of Unclassifed Man...	AA05B	37Kb / 2P	6W max 4.5V or 24V or 48V inputs Single / Dual output
Bel Fuse Inc.	X7AH-03EXX0	136Kb / 7P	NON-ISOLATED DC/DC CONVERTERS 4.5V-13.2V Input 0.9V-5.0V/3A Output
	S7DB-10E	308Kb / 17P	NON-ISOLATED DC/DC CONVERTERS 4.5V - 13.2V Input / 1.0V - 5.0V Output / 10A
	X7AH-03H	130Kb / 6P	NON-ISOLATED DC/DC CONVERTERS 4.5V-32V Input 1.2V-5.0V/3A Output
	V7PB-15E	179Kb / 9P	NON-ISOLATED DC/DC CONVERTERS 4.5V-13.2V Input 0.9V-5.0V/15A Output

More results

SC600DIMSTRT Datasheet(PDF) 9 Page - Semtech Corporation

SC600DIMSTRT Datasheet(HTML) 9 Page - Semtech Corporation

Similar Part No. - SC600DIMSTRT

Similar Description - SC600DIMSTRT

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Datasheet Download

Link URL