Datasheet

0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
V
pos
current (mA)
V
neg
current (mA)
V
IN
= 3.7 V
V
pos
= 5 V
V
neg
= −5 V
L = TOKO DFE252012C, 2.2µH
Not allowed
Area
Not allowed
Area
L1
I
Inductor
V
POS
V
NEG
V = 3.7V
V = 5V
V = -5V
I = 10mA
IN
POS
NEG
OUT
0
10
20
30
40
50
60
70
80
1 10 100
Current (mA)
Efficiency (%)
V
IN
= 2.5 V
V
IN
= 3.0 V
V
IN
= 3.7 V
V
IN
= 4.5 V
L = 2.2 µH
V
POS
= 5 V
V
NEG
= −5 V
G000
0
10
20
30
40
50
60
70
80
1 10 100
Current (mA)
Efficiency (%)
V
IN
= 2.5 V
V
IN
= 3.0 V
V
IN
= 3.7 V
V
IN
= 4.5 V
L = 4.7 µH
V
POS
= 5 V
V
NEG
= −5 V
G000
TPS65135
www.ti.com SLVS704A –NOVEMBER 2011–REVISED NOVEMBER 2011
TYPICAL CHARACTERISTICS
V
POS
= 5 V, V
NEG
= -5 V, unless otherwise noted
TABLE OF GRAPHS
Figure
Efficiency vs. load current with TOKO DFE252012C 2.2 µH inductor Figure 2
Efficiency vs. load current with TOKO DFE252012C 4.7 µH inductor Figure 3
Typical Output Current Window (Mismatch) I
OUTP
vs. I
OUTN
Figure 4
Operation at light load current (10mA) DCM operation Figure 5
Operation at high load current (80mA) CCM operation Figure 6
Line transient response I
OUT
= 10 mA Figure 7
Line transient response I
OUT
= 50 mA Figure 8
Start-up V
IN
rising, no load Figure 9
Start-up EN = high, no load Figure 10
Shut-down V
IN
falling, no load Figure 11
Shut-down EN = low, no load Figure 12
Transient Response I
OUT
= 10mA to 50mA (load between V
NEG
and V
POS
) Figure 13
Transient Response I
OUT
= 20mA to 80mA (load between V
NEG
and V
POS
) Figure 14
Switching frequency vs. load current Figure 15
Quiescent current vs. input voltage Figure 16
EFFICIENCY vs EFFICIENCY vs.
LOAD CURRENT (TOKO DFE252012C, 2.2 µH) LOAD CURRENT (TOKO DFE252012C, 4.7 µH)
Figure 2. Figure 3.
OUTPUT CURRENT MISMATCH
Positive Output Current vs. OPERATION AT LIGHT LOAD CURRENT,
Negative Output Current DCM OPERATION
Figure 4. Figure 5.
Copyright © 2011, Texas Instruments Incorporated 7
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