Datasheet

Data Sheet ADP2118
Rev. C | Page 3 of 24
SPECIFICATIONS
VIN = PVIN = 3.3 V, EN = VIN, SYNC/MODE = high @ T
J
= −40°C to +125°C, unless otherwise noted. Typical values are at T
J
= 25
o
C.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
VIN AND PVIN
VIN Voltage Range VIN 2.3 5.5 V
PVIN Voltage Range PVIN 2.3 5.5 V
Quiescent Current I
VIN
No switching, SYNC/MODE = GND 100 150 µA
Switching, no load, SYNC/MODE = high 680 900 µA
Shutdown Current I
SHDN
VIN = PVIN = 5.5 V, EN = GND 0.3 3 µA
VIN Undervoltage Lockout Threshold
UVLO
VIN rising
2.2
2.3
V
VIN falling 2 2.1 V
OUTPUT CHARACTERISTICS
Load Regulation
1
I
o
= 0 A to 3 A 0.08 %/A
Line Regulation
1
I
o
= 1.5 A 0.05 %/V
FB
FB Regulation Voltage
V
FB
VIN = 2.3 V to 5.5 V
0.591
0.6
0.609
V
FB Bias Current I
FB
0.01 0.1 µA
SW
High-Side On Resistance
2
VIN = PVIN = 3.3 V, I
SW
= 500 mA 75 110 mΩ
Low-Side On Resistance
2
VIN = PVIN = 3.3 V, I
SW
= 500 mA 40 60 mΩ
SW Peak Current Limit High-side switch, VIN = PVIN = 3.3 V 4 5.2 6.4 A
SW Maximum Duty Cycle VIN = PVIN = 5.5 V, full frequency 100 %
SW Minimum On Time
3
VIN = PVIN = 5.5 V, full frequency 100 ns
TRK
TRK Input Voltage Range 0 600 mV
TRK to FB Offset Voltage TRK = 0 mV to 500 mV −10 +10 mV
TRK Input Bias Current
100
nA
FREQUENCY
Oscillator Frequency FREQ = VIN 1.0 1.2 1.4 MHz
FREQ = GND 500 600 700 kHz
FREQ Input High Voltage 1.2 V
FREQ Input Low Voltage 0.4 V
SYNC/MODE
Synchronization Range 0.6 1.4 MHz
SYNC Minimum Pulse Width 100 ns
SYNC Minimum Off Time 100 ns
SYNC Input High Voltage 1.2 V
SYNC Input Low Voltage
0.4
V
INTEGRATED SOFT START
Soft Start Time
All switching frequency
2048
Clock cycles
PGOOD
Power Good Range FB rising threshold 105 110 115 %
FB rising hysteresis 2.5 %
FB falling threshold 85 90 94 %
FB falling hysteresis 2.5 %
Power Good Deglitch Time From FB to PGOOD 16 Clock cycles
PGOOD Leakage Current V
PGOOD
= 5 V 0.1 1 µA
PGOOD Output Low Voltage I
PGOOD
= 1 mA 140 200 mV