SparkFun BabyBuck Regulator Breakout - 3.3V (AP63203) - Datasheet

AP63200/AP63201/AP63203/AP63205
Functional Block Diagram
0.4V
0.8V
1.1V
+
-
+
-
-
+
0.6V
+
0.8V
Internal SS
Error
Amplifier
PWM
Comparator
Oscillator
+
Logic
-
+
Ref
OCP
7.6nF
18kΩ
S
E
= 0.84V/T
R
T
= 0.2V/A
UVP
Q1
Q2
1
2
EN
FB
4
GND
5
SW
6
BST
3
VIN
gm
20kΩ
+
-
Internal
Reference
V
CC
Regulator
ON
1.18V
1.5µA 4µA
VSUM
COMP
CSA
Figure 3. Functional Block Diagram
AP63200/AP63201/AP63203/AP63205
Document number: DS41326 Rev. 2 - 2
3 of 18
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