Datasheet

Data Sheet ADP1612/ADP1613
Rev. D | Page 3 of 28
SPECIFICATIONS
V
IN
= 3.6 V, unless otherwise noted. Minimum and maximum values are guaranteed for T
J
= −40°C to +125°C. Typical values specified
are at T
J
= 25°C. All limits at temperature extremes are guaranteed by correlation and characterization using standard statistical quality
control (SQC), unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ Max Unit
SUPPLY
Input Voltage V
IN
ADP1612 1.8 5.5 V
ADP1613 2.5 5.5 V
Quiescent Current
Nonswitching State I
Q
V
FB
= 1.5 V, FREQ = V
IN
900 1350 µA
V
FB
= 1.5 V, FREQ = GND
700
1300
µA
Shutdown I
QSHDN
V
EN
= 0 V 0.01 2 µA
Switching State
1
I
QSW
FREQ = V
IN
, no load 4 5.8 mA
FREQ = GND, no load 2.2 4 mA
Enable Pin Bias Current I
EN
V
EN
= 3.6 V 3.3 7 µA
OUTPUT
Output Voltage V
OUT
V
IN
20 V
Load Regulation I
LOAD
= 10 mA to 150 mA, V
IN
= 3.3 V, V
OUT
= 12 V 0.1 mV/mA
REFERENCE
Feedback Voltage V
FB
1.215 1.235 1.255 V
Line Regulation ADP1612, V
IN
= 1.8 V to 5.5 V; ADP1613, V
IN
= 2.5 V to 5.5 V 0.07 0.24 %/V
ERROR AMPLIFIER
Transconductance G
MEA
ΔI = 4 µA 80 µA/V
Voltage Gain A
V
60 dB
FB Pin Bias Current V
FB
= 1.3 V 1 50 nA
SWITCH
SW On Resistance R
DSON
I
SW
= 1.0 A 130 300 mΩ
SW Leakage Current V
SW
= 20 V 0.01 10 µA
Peak Current Limit
2
I
CL
ADP1612, duty cycle = 70% 0.9 1.4 1.9 A
ADP1613, duty cycle = 70% 1.3 2.0 2.5 A
OSCILLATOR
Oscillator Frequency f
SW
FREQ = GND 500 650 720 kHz
FREQ = V
IN
1.1 1.3 1.4 MHz
Maximum Duty Cycle D
MAX
COMP = open, V
FB
= 1 V, FREQ = V
IN
88 90 %
FREQ Pin Current I
FREQ
FREQ = 3.6 V 5 8 μA
EN/FREQ LOGIC THRESHOLD ADP1612, V
IN
= 1.8 V to 5.5 V; ADP1613, V
IN
= 2.5 V to 5.5 V
Input Voltage Low V
IL
0.3 V
Input Voltage High V
IH
1.6 V
SOFT START
SS Charging Current I
SS
V
SS
= 0 V 3.4 5 6.2 µA
SS Voltage V
SS
V
FB
= 1.3 V 1.2 V
UNDERVOLTAGE LOCKOUT (UVLO)
Undervoltage Lockout Threshold ADP1612, V
IN
rising 1.70 V
ADP1612, V
IN
falling
1.62
V
ADP1613, V
IN
rising 2.25 V
ADP1613, V
IN
falling 2.16 V
THERMAL SHUTDOWN
Thermal Shutdown Threshold 150 °C
Thermal Shutdown Hysteresis 20 °C
1
This parameter specifies the average current while switching internally and with SW (Pin 5) floating.
2
Current limit is a function of duty cycle. See the Typical Performance Characteristics section for typical values over operating ranges.