Datasheet

Data Sheet ADP2138/ADP2139
Rev. C | Page 3 of 20
SPECIFICATIONS
V
IN
= 3.6 V, V
OUT
= 0.8 V − 3.3 V, T
J
= −40°C to +125°C for minimum/maximum specifications, and T
A
= 25°C for typical specifications,
unless otherwise noted. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Input Voltage Range 2.3 5.5 V
Undervoltage Lockout Threshold V
IN
rising 2.3 V
V
IN
falling
2.00
2.15
2.25
V
OUTPUT CHARACTERISTICS
Output Voltage Accuracy
PWM mode
−2
+2
%
Line Regulation V
IN
= 2.3 V to 5.5 V, PWM mode 0.25 %/V
Load Regulation I
LOAD
= 0 mA − 800 mA −0.95 %/A
PWM TO POWER SAVE MODE CURRENT THRESHOLD 100 mA
INPUT CURRENT CHARACTERISTICS
DC Operating Current I
LOAD
= 0 mA, device not switching 23 30 μA
Shutdown Current EN = 0 V, T
A
= T
J
= −40°C to +85°C 0.2 1.0 μA
SW CHARACTERISTICS
SW On Resistance
PFET
155
240
mΩ
NFET 115 200 mΩ
Current Limit PFET switch peak current limit 1100 1500 1650 mA
Discharge Switch (ADP2139) 100 Ω
ENABLE AND MODE CHARACTERISTICS
Input High Threshold 1.2 V
Input Low Threshold 0.4 V
Input Leakage Current EN/MODE = 0 V (min), 3.6 V (max ) −1 0 +1 μA
OSCILLATOR FREQUENCY 2.6 3.0 3.4 MHz
START-UP TIME 250 μs
THERMAL CHARACTERISTICS
Thermal Shutdown Threshold 150 °C
Thermal Shutdown Hysteresis 20 °C
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
T
A
= −40°C to +125°C, unless otherwise specified. All limits at temperature extremes are guaranteed via correlation using standard
statistical quality control (SQC).
Table 2.
Parameter
Symbol
Min
Typ
Max
Unit
MINIMUM INPUT AND OUTPUT CAPACITANCE C
MIN
4.7 µF
CAPACITOR ESR R
ESR
0.001 1 Ω