Datasheet

TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
TPS65136
www.ti.com ............................................................................................................................................................. SLVS831A – APRIL 2008 – REVISED JULY 2008
ELECTRICAL CHARACTERISTICS (continued)
V
in
= 3.7 V, EN = VIN, OUTP = 4.6 V, OUTN = – 5.4 V, T
A
= – 40 ° C to 85 ° C; typical values are at T
A
= 25 ° C (unless otherwise
noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
outn
Negative output voltage range – 2.5 – 6 V
OVP
N
Negative overvoltage protection – 7.6 – 6 V
I
mis
Output current mismatch V
pos
/V
neg
– 30% 30%
V
outp
Positive output voltage regulation 4.554 4.6 4.646 V
t
dly
Sequencing delay V
pos
start to V
neg
start 6 8.7 11 ms
V
FBG
Feedback ground regulation – 10 0 10 mV
M1 MOSFET on-resistance I
sw
= 100 mA 200
M2 MOSFET on-resistance I
sw
= 100 mA 400
r
DS(on)
m Ω
M3 MOSFET on-resistance I
sw
= 100 mA 900
M4 MOSFET on-resistance I
sw
= 100 mA 600
I
SW
Switch current limit (M2) V
in
= 3.7 V 620 700 940 mA
V
in
= 2.5 V 720 830 1120
P
out
Output power V
pos
– V
neg
≤ 10 V; V
in
= 2.9 V 750 mW
f
s
Switching frequency I
out
neg = I
out
pos = 30 mA 1 MHz
I
out
neg = I
out
pos = 0 mA 40 kHz
Vo
low
Output pulldown voltage
(1)
EN = GND, I
out
neg = I
out
pos = 1 mA 1 V
Line regulation positive output OUTP I
out
neg = I
out
pos = 5 mA 0 %/V
Line regulation negative output OUTN I
out
neg = I
out
pos = 5 mA 0.008 %/V
Load regulation positive output OUTP V
in
= 3.7 V 0.27 %/A
Load regulation negative output OUTN V
in
= 3.7 V 0.25 %/A
(1) The device actively pulls down the outputs during shutdown. The value specifies the output voltage as a current is forced into the
outputs during shutdown.
FIGURE
Efficiency vs load current (2.2 µ H) Figure 1
Efficiency vs load current (4.7 µ H) Figure 2
Operation at light load current DCM operation Figure 3
Operation at high load current CCM operation Figure 4
Line transient response I
out
= 30 mA Figure 5
Line transient response I
out
= 50 mA Figure 6
Start-up Figure 7
Switching frequency vs load current Figure 8
Quiescent current vs input voltage Figure 9
Maximum output current 2.2 µ H, LPS3008-222 Figure 10
Maximum output current 2.2 µ H, LPF3010-2R2 Figure 11
Maximum output current 4.7 µ H, LPS3008-472 Figure 12
Maximum output current 4.7 µ H, LPF3010-4R7 Figure 13
Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): TPS65136