ADP1871ACPZ-1.0-R7 Analog Devices Inc, ADP1871ACPZ-1.0-R7 Datasheet - Page 2

• Manufacturer Part Number: ADP1871ACPZ-1.0-R7
• Description: 1.0MHz, Light Load Eff Enabled
• Manufacturer: Analog Devices Inc

Specifications of ADP1871ACPZ-1.0-R7

• Frequency - Max: 1MHz
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Duty Cycle: 45%
• Voltage - Supply: 2.95 V ~ 20 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 10-WFDFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADP1871ACPZ-1.0-R7; ADP1871ACPZ-1.0-R7TR

ADP1870/ADP1871
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Applications Circuit ............................................................ 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Pin Configuration and Function Descriptions ............................. 6
Typical Performance Characteristics ............................................. 7
ADP1870/ADP1871 Block Diagram ............................................ 18
Theory of Operation ...................................................................... 19
REVISION HISTORY
6/10—Rev. 0 to Rev. A
Added LFCSP Package ....................................................... Universal
Changes to Applications Section .................................................... 1
Changes to Internal Regulator Characteristics Parameter,
Changes to Table 2 and Table 3 ....................................................... 5
Changes to Figure 3 and Table 4 ..................................................... 6
Change to Figure 22 ....................................................................... 10
Changes to Figure 65 ...................................................................... 18
Changes to Efficiency Considerations Section ........................... 26
Changes to Table 9 ................................................................................... 28
Added Figure 84; Renumbered Sequentially ...................................... 28
Added Figure 96 ....................................................................................... 41
Changes to Ordering Guide ................................................................... 42
3/10—Revision 0: Initial Version
Thermal Resistance ...................................................................... 5
Boundary Condition .................................................................... 5
ESD Caution .................................................................................. 5
Startup .......................................................................................... 19
Soft Start ...................................................................................... 19
Precision Enable Circuitry ........................................................ 19
Undervoltage Lockout ............................................................... 19
On-Board Low Dropout Regulator .......................................... 19
Thermal Shutdown ..................................................................... 20
Programming Resistor (RES) Detect Circuit .......................... 20
Valley Current-Limit Setting .................................................... 20
Hiccup Mode During Short Circuit ......................................... 21
Synchronous Rectifier ................................................................ 22
Table 1 ............................................................................................ 3
Rev. A | Page 2 of 44
Applications Information .............................................................. 24
External Component Recommendations .................................... 31
Layout Considerations ................................................................... 33
Typical Applications Circuits ........................................................ 39
Outline Dimensions ....................................................................... 41
Power Saving Mode (PSM) Version (ADP1871) ................... 22
Timer Operation ........................................................................ 22
Pseudo-Fixed Frequency ........................................................... 23
Feedback Resistor Divider ........................................................ 24
Inductor Selection ...................................................................... 24
Output Ripple Voltage (ΔV
Output Capacitor Selection ....................................................... 24
Compensation Network ............................................................ 25
Efficiency Considerations ......................................................... 26
Input Capacitor Selection .......................................................... 27
Thermal Considerations ............................................................ 28
Design Example .......................................................................... 29
IC Section (Left Side of Evaluation Board) ............................. 37
Power Section ............................................................................. 37
Differential Sensing .................................................................... 38
15 A, 300 kHz High Current Application Circuit .................. 39
5.5 V Input, 600 kHz Application Circuit ............................... 39
300 kHz High Current Application Circuit ............................ 40
Ordering Guide .......................................................................... 42
RR
) .................................................. 24