Datasheet

PM8903A Electrical specifications
Doc ID 024147 Rev 1 9/33
4.3 Electrical characteristics
V
IN
= V
CC
= 3.3 V ± 5%, T
J
= 0 °C to 125 °C, typical values at T
J
= 25 °C, unless otherwise
specified.
Table 6. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
Supply current and undervoltage lockout
I
IN
VIN supply current Switching, no inductor connected 5 mA
I
CC
VCC supply current Switching, no inductor connected 1 mA
I
SHUTDOWN
VCC + VIN supply current Shutdown, EN = 0 V 13 μA
VIN UVLO
VIN turn-ON VIN rising 2.8 V
Hysteresis 100 mV
Deglitching
(1)
Rising and falling edge 1 μs
VCC UVLO
VCC turn-ON VCC rising 2.9 V
Hysteresis 100 mV
Deglitching
(1)
Rising and falling edge 1 μs
Oscillator
F
SW
Main oscillator accuracy
R
PM
=0 Ω / 24 kΩ / 180 kΩ / 240 kΩ
or PSKIP/MS pin floating
0.99 1.1 1.21 MHz
ΔV
OSC
PWM ramp amplitude
(1)
1V
d Duty cycle
(1)
0100%
T
ON-min
Minimum on-time
(1)
80 ns
T
OFF-min
Minimum off-time
(1)
80 ns
Reference and error amplifier
Output voltage accuracy VOUT = 0.6 V -1 - 1 %
A
0
DC gain
(1)
120 dB
GBWP Gain-bandwidth product
(1)
14 MHz
SR Slew-rate
(1)
C
COMP
= 20 pF 5 V/μs
Output power MOSFETS
HS R
DS-on
HS drain-source on-
resistance
35 mΩ
LS R
DS-on
LS drain-source on-
resistance
35 mΩ
Overcurrent protection
I
OC1
1st level overcurrent
threshold
HS sourcing 4.0 4.6 5.2 A
I
OC2
2nd level overcurrent
threshold
(1)
HS sourcing 4.5 5.2 5.9 A