Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- OPERATING RANGE
- ELECTRICAL CHARACTERISTICS
- TYPICAL PERFORMANCE CHARACTERISTICS
- BLOCK DIAGRAM
- APPLICATION INFORMATION
- CONSTANT ON-TIME CONTROL OVERVIEW
- INTERNAL OPERATION UNDER-VOLTAGE COMPARATOR
- ON-TIME GENERATOR SHUTDOWN
- CURRENT LIMIT
- N-CHANNEL HIGH SIDE SWITCH AND DRIVER
- THERMAL SHUTDOWN
- COMPONENT SELECTION
- FREQUENCY SELECTION
- INDUCTOR SELECTION
- OUTPUT CAPACITOR
- RIPPLE FEED FORWARD
- FEEDBACK RESISTORS
- INPUT CAPACITOR
- AVIN CAPACITOR
- SOFT-START CAPACITOR
- EXTVCC CAPACITOR
- SHUTDOWN
- CBOOT CAPACITOR
- PGOOD RESISTOR
- CATCH DIODE
- BYPASS CAPACITOR
- EXTERNAL OPERATION STARTUP
- UNDER- & OVER-VOLTAGE CONDITIONS
- CURRENT LIMIT
- MODES OF OPERATION
- LINE REGULATION
- TRANSIENT RESPONSE
- EFFICIENCY
- PRE-BIAS LOAD STARTUP
- THERMAL CONSIDERATIONS
- LAYOUT CONSIDERATIONS
- Revision History

-40
-20 0 20 40 60 80 100 120
TEMPERATURE (
o
C)
V
ON
(V)
0
0.2
0.4
0.6
0.8
1
-40
-20 0 20 40 60 80 100 120
TEMPERATURE (
o
C)
CURRENT LIMIT (
A)
4
4.2
4.4
4.6
4.8
5
5.2
5.4
100 200 300 400 500
0.0
0.2
0.4
0.6
0.8
1.0
DUTY CYCLE
FREQUENCY (kHz)
Min Duty Cycle
Max Duty Cycle
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (
o
C)
0
0.05
0.1
0.15
0.2
0.25
R
DS_ON
(:)
LM2696
www.ti.com
SNVS375B –OCTOBER 2005–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Max and Min Duty-Cycle vs Freq
(Min T
ON
= 400 ns, Min T
OFF
= 200 ns) FET Resistance vs Temp
Figure 14. Figure 15.
R
ON
Pin Voltage vs Temp Current Limit vs Temp
Figure 16. Figure 17.
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