Datasheet

2.5 3.0 3.5 4.0 4.5 5.0 5.5
0
20
40
60
80
100
120
140
160
SOFT START DELAY TIME (s)
VIN (V)
Temp = -40°C
Temp = 25°C
Temp = 125°C
0 10 20 30 40 50 60 70 80 90
300
400
500
600
700
800
SOFT OFF TIME (EN TO 10% VOUT) (s)
TEMP (°C)
VIN = 2.8 V
VIN = 3.0 V
VIN = 4.0 V
VIN = 5.0 V
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
EN THRESHOLDS (V)
VIN (V)
Rising TH -40°C
Falling TH -40°C
Rising TH 25°C
Falling TH 25°C
Rising TH 125°C
Falling TH 125°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5
0
100
200
300
400
500
600
700
800
SOFT START TIME (NO LOAD) (s)
VIN (V)
Vout = -5.0V
Vout = -3.3V
Vout = -2.5V
Vout = -1.5V
Vout = -0.9V
2.8 3.2 3.6 4.0 4.4 4.8 5.2
0.0
0.5
1.0
1.5
2.0
2.5
3.0
NO LOAD CURRENT (mA)
VIN (V)
-40 -20 0 20 40 60 80 100 120 140
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
RDS-ON ()
TEMPERATURE (°C)
Vin = 2.8V
Vin = 4.0V
Vin = 5.5V
LMR70503
www.ti.com SNVS850A –JUNE 2012–REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Unless otherwise specified, the following conditions apply: V
IN
= 3.3 V, V
OUT
= -5.0 V, V
EN
= 1.8 V, C
IN
= 10 µF 6.3 V X5R
ceramic capacitor; C
OUT
= 2 × 22 µF 6.3 V X5R ceramic capacitor; L = 6.8 µH (VLS2012ET-6R8M); T
AMBIENT
= 25 °C.
No Load Supply Current Rds-on
Figure 17. Figure 18.
Enable Thresholds Soft Start Time (No Load)
Figure 19. Figure 20.
Soft Off Time, V
OUT
= -5.5 V (No Load, From EN Falling
Soft Start Delay Time (From EN Rising Edge) Edge)
Figure 21. Figure 22.
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