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
LM2696
SNVS375B –OCTOBER 2005–REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Specifications with standard typeface are for T
J
= 25°C, and those in boldface type apply over the full Operating
Temperature Range (T
J
= −40°C to +125°C). Minimum and Maximum limits are specified through test, design or statistical
correlation. Typical values represent the most likely parametric norm at T
J
= 25°C and are provided for reference purposes
only. Unless otherwise specified V
IN
= 12V.
Symbol Parameter Condition Min Typ Max Units
I
SS SINK
Soft-Start Pin Sink Current V
SS
= 1.2V
15 mA
V
SD
= 0V
I
SD
Shutdown Pull-Up Current V
SD
= 0V 1 3 µA
V
IH
SD Pin Minimum High Input Level 1.8 V
V
IL
SD Pin Maximum Low Input Level 0.6 V
θ
J-A
Thermal Resistance 35.1 °C/W
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