Diodes AP2121 - Manual (Page 3)

Data Sheet
3
Dec. 2012 Rev. 2. 6 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2121
Functional Block Diagram
Figure 3. Functional Block Diagram of AP2121
SOT-23-5/CSP-4(J4/J4A)/CSP-4(J4C/J4B)
VREF
CURRENT LIMIT
VREF
CURRENT LIMIT
V
IN
CE
V
OUT
GND
2/B1/B2 3/A1/B1
1/A2/A1 5/B2/A2 V
IN
V
OUT
GND
1
3 2
SOT-23-3