TPS74801-Q1
www.ti.com
SLVSAI4A –OCTOBER 2010–REVISED FEBRUARY 2011
TYPICAL CHARACTERISTICS (continued)
At TJ = +25°C, VIN = VOUT(TYP) + 0.3V, VBIAS = 5V, IOUT = 50mA, VEN = VIN, CIN = 1μF, CBIAS = 4.7μF, and COUT = 10μF,
unless otherwise noted.
BIAS PIN CURRENT vs
BIAS PIN CURRENT vs
IOUT AND TEMPERATURE (TJ)
VBIAS AND TEMPERATURE (TJ)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
+125°C
+125°C
+25°C
+25°C
-40°C
-40°C
0
0.2
0.4
0.6
0.8
IOUT (A)
1.0
1.2
1.4
1.6
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VBIAS (V)
Figure 15.
Figure 16.
SOFT-START CHARGING CURRENT (ISS) vs
TEMPERATURE (TJ)
LOW-LEVEL PG VOLTAGE vs CURRENT
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
500
475
450
425
400
375
350
325
300
-50
-25
0
25
50
75
100
125
0
2
4
6
8
10
12
Junction Temperature (°C)
PG Current (mA)
Figure 17.
Figure 18.
CURRENT LIMIT vs (VBIAS – VOUT
)
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
VOUT = 0.8V
+125°C
-40°C
+25°C
2.0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
VBIAS - VOUT (V)
Figure 19.
© 2010–2011, Texas Instruments Incorporated
Submit Documentation Feedback
9
Product Folder Link(s): TPS74801-Q1
TI [ TEXAS INSTRUMENTS ]
