SWCS046N – MARCH 2010 – REVISED APRIL 2012
VIO SMPS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
Input voltage (VCCIO and VCC7) V
IN
TEST CONDITIONS
I
OUT
≤
800 mA
V
OUT
= 1.5 V or 1.8 V, I
OUT
> 800 mA
V
OUT
= 2.5 V, I
OUT
> 800 mA
V
OUT
= 3.3 V, I
OUT
> 800 mA
DC output voltage (V
OUT
)
PWM mode (VIO_PSKIP = 0) or pulse skip
mode I
OUT
to I
MAX
VSEL=00
VSEL = 01, default BOOT[1:0] = 00 and 01
VSEL = 10
VSEL = 11
Power down
Rated output current I
OUTmax
P-channel MOSFET
On-resistance R
DS(ON)_PMOS
P-channel leakage current I
LK_PMOS
N-channel MOSFET
On-resistance R
DS(ON)_NMOS
N-channel leakage current I
LK_NMOS
PMOS current limit (high-side)
ILMAX[1:0] = 00, default
ILMAX[1:0] = 01
V
IN
= V
INmin
V
IN
= 3.8 V
V
IN
= V
INMAX
, SWIO = 0 V
V
IN
= V
MIN
V
IN
= 3.8 V
V
IN
= V
INmax
, SWIO = V
INmax
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 00
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 01
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 10
NMOS current limit (low-side)
Source current load:
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 00
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 01
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 10
Sink current load:
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 00
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 01
V
IN
= V
INmin
to V
INmax
, ILMAX[1:0] = 10
DC load regulation
DC line regulation
Transient load regulation
t on, off to on
Overshoot
Power-save mode Ripple voltage
Switching frequency
Duty cycle
Minimum On Time T
ON(MIN)
P-channel MOSFET
VFBIO internal resistance
Discharge resistor for power-down
sequence R
DIS
During device switch-off sequence
Note: No discharge resistor is applied if VIO is
turned off while the device is on.
Copyright © 2010–2012, Texas Instruments Incorporated
MIN
2.7
3.2
4.0
4.4
TYP
MAX
5.5
5.5
5.5
5.5
UNIT
V
–3%
–3%
–3%
–3%
500
1000
1.5
1.8
2.5
3.3
0
+3%
+3%
+3%
+3%
V
mA
300
250
300
250
400
2
400
2
mΩ
µA
mΩ
µA
mA
650
1200
1700
650
1200
1700
800
1200
1700
20
20
50
mV
mV
mV
mA
On mode, I
OUT
= 0 to I
OUTmax
On mode, V
IN
= V
INmin
to V
INmax
V
IN
= 3.8 V, V
OUT
= 1.8 V
I
OUT
= 0 to 500 mA , Max slew = 100 mA/µs
I
OUT
= 700 to 1200 mA , Max slew = 100 mA/µs
I
OUT
= 200 mA
SMPS turned on
Pulse skipping mode, I
OUT
= 1 mA
350
3%
0.025 ×
V
OUT
3
µs
V
PP
MHz
100
%
ns
MΩ
50
Ω
35
0.5
1
30
13
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