ADP3300ART-32 AD [Analog Devices], ADP3300ART-32 Datasheet - Page 8

• Manufacturer Part Number: ADP3300ART-32
• Description: High Accuracy anyCAP 50 mA Low Dropout Linear Regulator
• Manufacturer: AD [Analog Devices]

Constant Dropout Post Regulator
The circuit in Figure 24 provides high precision with low dropout
for any regulated output voltage. It significantly reduces the
ripple from a switching regulator while providing a constant
ADP3300
V
IN
= 2.5V TO 3.5V
100 F
10V
C1
0.051 (1.30)
0.035 (0.90)
0.071 (1.80)
0.059 (1.50)
I
LIM
ADP3000-ADJ
R1
120Ω
GND
0.059 (0.15)
0.000 (0.00)
PIN 1
V
IN
SW2
Dimensions shown in inches and (mm).
1
6-Lead Surface Mount Package
6
6.8 H
0.122 (3.10)
0.106 (2.70)
0.075 (1.90)
L1
SW1
OUTLINE DIMENSIONS
FB
BSC
5
2
0.020 (0.50)
0.010 (0.25)
1N5817
4
3
(SOT-23)
D1
0.037 (0.95) BSC
0.118 (3.00)
0.098 (2.50)
0.057 (1.45)
0.035 (0.90)
SEATING
PLANE
C2
100µF
10V
dropout voltage, which limits the power dissipation of the
LDO to 15 mW. The ADP3000 used in this circuit is a
switching regulator in the step-up configuration.
2N3906
Q1
0.009 (0.23)
0.003 (0.08)
R2
30.1kΩ
1%
R3
124kΩ
1%
IN
10°
0°
ADP3300-5
GND
0.022 (0.55)
0.014 (0.35)
OUT
Q2
2N3906
R4
274kΩ
C3
2.2 F
5V @ 50mA