ADP1829ACPZ-R7 Analog Devices Inc, ADP1829ACPZ-R7 Datasheet - Page 2

• Manufacturer Part Number: ADP1829ACPZ-R7
• Description: IC BUCK SYNC ADJ 100uA 32LFCSP
• Manufacturer: Analog Devices Inc
• Type: Step-Down (Buck)r

Specifications of ADP1829ACPZ-R7

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 15 V
• Current - Output: 100µA
• Frequency - Switching: 300kHz, 600kHz
• Voltage - Input: 3 ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Power - Output: 1W
• Primary Input Voltage: 20V
• No. Of Outputs: 2
• Output Voltage: 17V
• No. Of Pins: 32
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 3 - 168 Hours
• Frequency Max: 1MHz
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ADP1829-EVALZ - BOARD EVALUATION ADP1829
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: ADP1829ACPZ-R7TR

ADP1829
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Functional Block Diagram .............................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 13
REVISION HISTORY
1/11—Rev. A to Rev. B
Changes to VREG Short-Circuit Current Parameter, Table 1 .... 3
Changes to Figure 3 and Table 3 ..................................................... 7
Added Exposed Paddle Notation to Outline Dimensions ........ 29
4/09—Rev. 0 to Rev. A
Changes to Features and General Description Sections .............. 1
Changes to IN Input Voltage; EN1, IN2 Input High Voltage;
EN1, EN2 Input Low Voltage; and EN1, EN2 Input Impedance
to 5 V Zener Parameters, Table 1 ................................................... 3
Changes to Table 2 ............................................................................ 5
Changes to Table 3 ............................................................................ 7
Changes to Theory of Operation Section, Input Power Section,
and Start-Up Logic Section ........................................................... 13
Changes to Ordering Guide .......................................................... 29
6/07—Revision 0: Initial Version
ESD Caution .................................................................................. 5
Input Power ................................................................................. 13
Start-Up Logic ............................................................................. 13
Internal Linear Regulator .......................................................... 13
Oscillator and Synchronization ................................................ 13
Error Amplifier ........................................................................... 14
Soft Start ...................................................................................... 14
Power OK Indicator ................................................................... 14
Rev. B | Page 2 of 32
Applications Information .............................................................. 16
PCB Layout Guidelines .................................................................. 25
Application Circuits ....................................................................... 27
Outline Dimensions ....................................................................... 29
Tracking ....................................................................................... 14
MOSFET Drivers ........................................................................ 15
Current Limit .............................................................................. 15
Selecting the Input Capacitor ................................................... 16
Selecting the MOSFETs ............................................................. 17
Setting the Current Limit .......................................................... 18
Feedback Voltage Divider ......................................................... 18
Compensating the Voltage Mode Buck Regulator ................. 19
Soft Start ...................................................................................... 22
Voltage Tracking ......................................................................... 22
Coincident Tracking .................................................................. 23
Ratiometric Tracking ................................................................. 23
Thermal Considerations ............................................................ 24
LFCSP Package Considerations ................................................ 26
Ordering Guide .......................................................................... 29