SC4501STDEVB Semtech, SC4501STDEVB Datasheet - Page 18
SC4501STDEVB
Manufacturer Part Number
SC4501STDEVB
Description
EVALUATION BOARD
Manufacturer
Semtech
Datasheet
1.SC4501MLTRT.pdf
(21 pages)
Specifications of SC4501STDEVB
Silicon Manufacturer
Semtech
Application Sub Type
Step Up Switching Regulator
Kit Application Type
Power Management - Voltage Regulator
Silicon Core Number
SC4501
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
POWER MANAGEMENT
Typical Application Circuits
2005 Semtech Corp.
Figure 13(b). TFT Power Supply V
D2 - D7 : BAT54S
L1 : Cooper-Bussmann SD25-2R2
CH1 : OUT1 Voltage, 5V/div
CH2 : OUT2 Voltage, 10V/div
CH3 : OUT3 Voltage, 5V/div
CH4 : Input Voltage, 2V/div
3.3V
2.2 F
C1
CH1
CH2
CH3
CH4
4ms/div
150K
100K
R5
R6
Figure 13(a). 1.5MHz Triple-Output TFT Power Supply.
IN
8
3
47nF
C3
Start-up Transient.
SHDN
SS
IN
GND
6
4
SC4501
2.2 H
L1
ROSC
7
COMP
5
SW
7.68K
FB
R4
2
1
D2
40.2K
R3
820pF
C4
18
C5
0.1 F
D3
C9
0.1 F
10BQ015
D6
Figure 13(c). TFT Power Supply Start-up Transient as the
D1
D7
C6
0.1 F
D4
1 F
C10
OUT3
-8V (10mA)
R1
274K
49.9K
R2
SHDN Pin is stepped from 0 to 2V.
CH3 : OUT3 Voltage, 5V/div
CH4 : SHDN Voltage, 2V/div
CH1 : OUT1 Voltage, 5V/div
CH2 : OUT2 Voltage, 10V/div
C7
0.1 F
D5
OUT1
8V (0.55A)
10 F
CH1
CH2
CH3
CH4
C2
2ms/div
C8
1 F
OUT2
23V (10mA)
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SC4501