ZXSC300E5TA Diodes Zetex, ZXSC300E5TA Datasheet - Page 6

• Manufacturer Part Number: ZXSC300E5TA
• Description: IC LED DRVR WHITE BCKLGT SOT23-5
• Manufacturer: Diodes Zetex
• Type: Backlight, White LEDr

Specifications of ZXSC300E5TA

• Constant Current: Yes
• Topology: Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: High Brightness LED (HBLED), White LED
• Frequency: 200kHz
• Voltage - Supply: 0.8 V ~ 8 V
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 3.6mA
• Internal Switch(s): Yes
• Efficiency: 94%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: ZXSC300E5TR

REFERENCE DESIGNS
Two typical LED driving applications are shown.
Firstly a maximum brightness solution and
secondly an optimised battery life solution.
Maximum brightness solution
This circuit provides a constant current output to
the LED by rectifying the switching pulses. This
ensures maximum LED brightness.
Material List
ZXSC300
VBATT
Ref
U1
Q1
D1
R1
C1
L1
LED1
U1
ZXSC300
Gnd
V
cc
V
I
sense
Value
N/A
N/A
1A
100mR
2.2 F
100µH
5600mcd
L1
100µH
drive
Q1
FMMT617
R1
0.1R
ZHCS1000
Part Number
ZXSC300E5
FMMT617
ZHCS1000
Generic
Generic
DO1608P-104
NSPW500BS
D1
2.2µF
C1
LED1
WHITE LED
Manufacture
Zetex Plc
Zetex Plc
Zetex Plc
Various
Various
Coilcraft
Nichia
6
Comments
Single cell converter, SOT23-5
Low V
1A Shottky diode, SOT23
0805 Size
Low ESR ceramic capacitor
Surface mount inductor
White LED
CE(sat)
ISSUE 4 - SEPTEMBER 2007
NPN, SOT23