Sanyo DP55360 - Page 33

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IC1670, DC to DC Converter
Internal Stable
supply
TSD
Vref
0.8V
Internal
Regulator
Current
Limit Logic
Internal regulator
(5V)
V
IN
BOOT
1 : N
BOOT (SW+Vreg.)
FB
COMP
SS
EN
+
-
+
-
+
-
GND
•
C1,C8,C5,C9 = Ceramic capacitor
•
L1 = CDRH105RNP-100NC (sumida)
L1 = 10μH
C8 = 10μF/25V
C6 = 0.015μF
R2 = 2.4kΩ
R3 = 10kΩ
R1 = 27kΩ
R10 = 4.3kΩ
C4 = OPEN
C3 = 6800pF
H : ON or OPEN
L : OFF
C2 = 10μF/25V
C1 = 0.01μF
Rb = 0
V
IN
= 12V
V
OUT
= 3.3V
D1=SBM30-03
SW
Error
Amp
OSC
370kHz
UVLO
PWM
comparator
Current Sense
Amp
Pre Drive
Pre Drive
C5 = 22μF/16V
C9 = 22μF/16V
IC1650, IC6601, IC600 DC to DC Converter