®
ACT8937
Rev 0, 21-Sep-10
STEP-DOWN DC/DC ELECTRICAL CHARACTERISTICS
(VVP1 = VVP2 = VVP3 = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
Operating Voltage Range
UVLO Threshold
CONDITIONS
MIN
2.7
TYP
MAX
5.5
UNIT
V
Input Voltage Rising
2.5
2.6
100
65
0
2.7
V
UVLO Hysteresis
Input Voltage Falling
Regulator Enabled
mV
µA
µA
Quiescent Supply Current
Shutdown Current
90
1
V
VP = 5.5V, Regulator Disabled
ꢀ
VOUT ≥ 1.2V, IOUT = 10mA
-1%
-2%
VNOM
VNOM
1%
2%
Output Voltage Accuracy
V
ꢀ
VOUT < 1.2V, IOUT = 10mA
Line Regulation
V
VP = Max(VNOM1+1, 3.2V) to 5.5V
0.15
0.0017
93
%/V
%/mA
%VNOM
%VNOM
MHz
kHz
Load Regulation
I
OUT = 10mA to IMAX2
Power Good Threshold
Power Good Hysteresis
V
V
V
V
OUT Rising
OUT Falling
2
OUT ≥ 20% of VNOM
OUT = 0V
1.8
2
2.2
Oscillator Frequency
500
400
75
Soft-Start Period
Minimum On-Time
REG1
µs
ns
Maximum Output Current
Current Limit
1.1
A
A
1.55
1.80
0.16
0.16
0
2.05
1
PMOS On-Resistance
NMOS On-Resistance
SW1 Leakage Current
REG2
I
SW1 = -100mA
SW1 = 100mA
ꢀ
I
ꢀ
V
VP1 = 5.5V, VSW1 = 0 or 5.5V
µA
Maximum Output Current
Current Limit
1.1
A
A
1.55
1.80
0.16
0.16
0
2.05
1
PMOS On-Resistance
NMOS On-Resistance
SW2 Leakage Current
REG3
I
SW2 = -100mA
SW2 = 100mA
ꢀ
I
ꢀ
V
VP2 = 5.5V, VSW2 = 0 or 5.5V
µA
Maximum Output Current
Current Limit
1.2
A
A
1.55
1.80
0.16
0.16
0
2.05
PMOS On-Resistance
I
SW3 = -100mA
ISW3 = 100mA
VP3 = 5.5V, VSW3 = 0 or 5.5V
ꢀ
NMOS On-Resistance
SW3 Leakage Current
ꢀ
V
1
µA
ꢀ: VNOM refers to the nominal output voltage level for VOUT as defined by the Ordering Information section.
2: IMAX Maximum Output Current.
Innovative PowerTM
- 16 -
www.active-semi.com
Active-Semi Proprietary―For Authorized Recipients and Customers
ActivePMUTM and ActivePathTM are trademarks of Active-Semi.
I2CTM is a trademark of NXP.
Copyright © 2010 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
