Datasheet

Data Sheet ADP2119/ADP2120
Rev. A | Page 3 of 24
SPECIFICATIONS
V
IN
= V
PVIN
= 3.3 V, EN = VIN, SYNC/MODE = VIN at T
J
= −40°C to +125°C, unless otherwise noted.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
VIN and PVIN
VIN Voltage Range V
IN
2.3 5.5 V
PVIN Voltage Range V
PVIN
2.3 5.5 V
Quiescent Current I
VIN
No switching, SYNC/MODE = GND 150 200 µA
Switching, no load, SYNC/MODE = VIN 680 900 µA
Shutdown Current I
SHDN
V
IN
= V
PVIN
= 5.5 V, EN = GND 0.3 2 µA
VIN Undervoltage Lockout Threshold
UVLO
V
IN
rising
2.2
2.3
V
V
IN
falling 2 2.1 V
OUTPUT CHARACTERISTICS
Load Regulation
1
ADP2119, I
O
= 0 A to 2 A 0.08 %/A
Load Regulation
2
ADP2120, I
O
= 0 A to 1.25 A 0.08 %/A
Line Regulation
1
ADP2119, I
O
= 1 A 0.05 %/V
Line Regulation
2
ADP2120, I
O
= 1 A 0.05 %/V
FB
FB Regulation Voltage V
FB
V
IN
= 2.3 V to 5.5 V 0.591 0.6 0.609 V
FB Bias Current I
FB
V
IN
= 2.3 V to 5.5 V 0.01 0.1 µA
SW
High-Side On Resistance
3
V
IN
= V
PVIN
= 3.3 V, I
SW
= 200 mA 145 190 mΩ
Low-Side On Resistance
3
V
IN
= V
PVIN
= 3.3 V, I
SW
= 200 mA 70 100 mΩ
SW Peak Current Limit High-side switch, V
IN
= V
PVIN
= 3.3 V (ADP2119) 2.5 3 3.5 A
High-side switch, V
IN
= V
PVIN
= 3.3 V (ADP2120) 1.6 2 2.4 A
SW Maximum Duty Cycle V
IN
= V
PVIN
= 5.5 V, full frequency 100 %
SW Minimum On Time
4
V
IN
= V
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 −15 +15 mV
TRK Input Bias Current 100 nA
FREQUENCY
Oscillator Frequency f
S
1.02 1.2 1.38 MHz
SYNC/MODE
Synchronization Range 1 2 MHz
SYNC Minimum Pulse Width 100 ns
SYNC Minimum Off Time 100 ns
SYNC Input High Voltage 1.3 V
SYNC Input Low Voltage
0.4
V
INTEGRATED SOFT START
Soft Start Time All switching frequencies 1024 Clock
cycles
f
S
= 1.2 MHz 853 µs
PGOOD
Power-Good Range
FB rising threshold
105
110
115
%
FB rising hysteresis 2.5 %
FB falling threshold 85 90 95 %
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 150 200 mV
PGOOD Output Low Resistor I
PGOOD
= 1 mA 150 200 Ω