Datasheet

Data Sheet ADP1829
Rev. C | Page 3 of 28
SPECIFICATIONS
IN = 12 V, ENx = FREQ = PV = VREG = 5 V, SYNC = GND, T
J
= −40°C to +125°C, unless otherwise specified. All limits at temperature
extremes are guaranteed via correlation using standard statistical quality control (SQC). Typical values are at T
A
= 25°C.
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
POWER SUPPLY
IN Input Voltage PV = VREG (using internal regulator) 5.5 20 V
IN = PV = VREG (not using internal regulator) 3.0 5.5 V
IN Quiescent Current Not switching, I
VREG
= 0 mA 1.5 3 mA
IN Shutdown Current EN1 = EN2 = GND 10 20 μA
VREG Undervoltage Lockout Threshold VREG rising 2.4 2.7 3.0 V
VREG Undervoltage Lockout Hysteresis 0.125 V
ERROR AMPLIFIER
FB1, FB2 Regulation Voltage
T
A
= 25°C, TRK1, TRK2 > 700 mV
597 600 603 mV
T
J
= 0°C to 85°C, TRK1, TRK2 > 700 mV
591 609 mV
T
J
= −40°C to +125°C, TRK1, TRK2 > 700 mV
588 612 mV
T
J
= 0°C to 70°C, TRK1, TRK2 > 700 mV
595 605 mV
FB1, FB2 Input Bias Current 100 nA
Open-Loop Voltage Gain 70 dB
Gain-Bandwidth Product 20 MHz
COMP1, COMP2 Sink Current 600 μA
COMP1, COMP2 Source Current 120 μA
COMP1, COMP2 Clamp High Voltage 2.4 V
COMP1, COMP2 Clamp Low Voltage 0.75 V
LINEAR REGULATOR
VREG Output Voltage
T
A
= 25
°
C, I
VREG
= 20 mA
4.85
5.0
5.15
V
IN = 7 V to 18 V, I
VREG
= 0 mA to 100 mA 4.75 5.0 5.25 V
VREG Load Regulation I
VREG
= 0 mA to 100 mA, IN = 12 V −40 mV
VREG Line Regulation IN = 7 V to 18 V, I
VREG
= 20 mA 1 mV
VREG Current Limit VREG = 4 V 220 mA
VREG Short-Circuit Current VREG < 0.5 V 140 200 mA
IN to VREG Dropout Voltage
1
I
VREG
= 100 mA, IN < 5 V 0.7 1.4 V
VREG Minimum Output Capacitance 1 μF
PWM CONTROLLER
PWM Ramp Voltage Peak SYNC = GND 1.3 V
DH1, DH2 Maximum Duty Cycle FREQ = GND (300 kHz) 91 93 %
DH1, DH2 Minimum Duty Cycle FREQ = GND (300 kHz) 1 3 %
SOFT START
SS1, SS2 Pull-Up Resistance SS1, SS2 = GND 90 kΩ
SS1, SS2 Pull-Down Resistance SS1, SS2 = 0.6 V 6 kΩ
SS1, SS2 to FB1, FB2 Offset Voltage SS1, SS2 = 0 mV to 500 mV −45 mV
SS1, SS2 Pull-Up Voltage 0.8 V
TRACKING
TRK1, TRK2 Common-Mode Input
Voltage Range
0 600 mV
TRK1, TRK2 to FB1, FB2 Offset Voltage TRK1, TRK2 = 0 mV to 500 mV −5 +5 mV
TRK1, TRK2 Input Bias Current 100 nA