Datasheet
Table Of Contents
- Features
- Applications
- Typical Application Circuit
- General Description
- Revision History
- Functional Block Diagram
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Theory of Operation
- Control Scheme
- PWM Mode
- PFM Mode
- Precision Enable/Shutdown
- Separate Input Voltages
- Internal Regulator (INTVCC)
- Bootstrap Circuitry
- Low-Side Driver
- Oscillator
- Synchronization
- Soft Start
- Peak Current-Limit and Short-Circuit Protection
- Voltage Tracking
- Parallel Operation
- Power Good
- Overvoltage Protection
- Undervoltage Lockout
- Thermal Shutdown
- Applications Information
- Design Example
- External Components Recommendation
- Typical Application Circuits
- Outline Dimensions
ADP2323 Data Sheet
Rev. A | Page 30 of 32
INTVCC
R
TOP1
47.5kΩ
C
C1
1000pF
R
C1
68kΩ
C
SS1
22nF
C
INT
1µF
C
DRV
1µF
C
IN1
10µF, 25V
C
BST1
0.1µF
C
BST2
0.1µF
L1
4.7µH
M1
FDS8880
M2
FDS8880
L2
2.2µH
V
IN
12V
V
IN
12V
V
OUT1
2.5V, 3A
C
OUT1
47µF
C
OUT3
100µF
V
OUT2
1.25V, 3A
R
BOT1
15kΩ
R
TRK_TOP
47.5kΩ
R
TRK_BOT
15kΩ
R
TOP2
13kΩ
R
C2
58kΩ
C
C2
1000pF
C
SS2
10nF
C
IN2
10µF, 25V
R
BOT2
12kΩ
R
OSC
120kΩ
FB1
COMP1
SS1
EN1
PVIN1
BST1
FB2
COMP2
SS2
EN2
PVIN2
BST2
TRK2
MODE
SCFG
VDRV
ADP2323
GND
PGOOD2
PGOOD1
SYNC
RT
SW1
DL1
PGND
DL2
SW2
TRK2
C
OUT2
47µF
C
OUT4
100µF
09357-057
Figure 57. Channel 2 Tracking with Channel 1
V
IN1
= V
IN2
= 12 V, V
OUT1
= 2.5 V, I
OUT1
= 3 A, V
OUT2
= 1.25 V, I
OUT2
= 3 A, f
SW
= 500 kHz