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
0 50 100 150 200 250 300
I
ON
(PA)
0
0.5
1
1.5
2
2.5
3
T
ON
(Ps)
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (
o
C)
168
170
172
174
176
178
180
T
OFF
(ns)
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
T
ON
. I
ON
(Ps . PA)
64.7
64.9
65.1
65.3
65.5
65.7
65.9
66.1
66.3
66.5
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (
o
C)
1.249
1.25
1.251
1.252
1.253
1.254
1.255
1.256
1.257
1.248
V
FB
(V)
4.5
7.5 10.5 13.5 16.5 24
V
IN
(V)
19.5
22.5
EXTV
CC
(V)
3.644
3.646
3.648
3.650
3.652
3.654
3.656
3.658
3.660
0 10 20 30 40 50
3.62
3.63
3.64
3.65
3.66
EXT V
CC
(V)
EXT V
CC
(PA)
LM2696
SNVS375B –OCTOBER 2005–REVISED APRIL 2013
www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
EXTV
CC
vs V
IN
EXTV
CC
vs Load Current
Figure 8. Figure 9.
Feedback Threshold Voltage vs Temp k
ON
vs Temp
Figure 10. Figure 11.
Switch ON Time vs R
ON
Pin Current Min Off-Time vs Temp
Figure 12. Figure 13.
6 Submit Documentation Feedback Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: LM2696