FAN5037 Datasheet, PDF (5/11 Pages) Fairchild Semiconductor – Adjustable Switching Regulator Controller

PRODUCT SPECIFICATION
Typical Operating Characteristics (continued)
Output Startup, System Power-Up
Pin 7 (DRV), 10A Load
FAN5037
Time (5ms/division)
Pin 7 (DRV), 0.1A Load
Time (1µs/division)
Time (1µs/division)
Application Circuit
+5V
+12V
C1
0.1µF
C7
0.1uF
Optional
L1
2.5µH
R1
47Ω C5
C6
180pF
+C2
1200µF
D2
MMBD4148
D3
1N4735A
+C3 +C4
1200µF 1200µF
Q1
C8 0.1µF
FDB6030L
L2
R3
1µF
4.7µH _5.2mΩ
R2 4.7Ω
1
8
2 _U1 7
3 _FAN5037 6
4
5
D1
MBRB1545CT
REV. 1.0.3 9/26/01
Figure 1. 13A at 3.3V Application Schematic
V_CORE
R4
3.48KΩ
+... + C14
1500µF
R5
2KΩ
5