Datasheet

ADP1829 Data Sheet
Rev. C | Page 4 of 28
Parameter Conditions Min Typ Max Unit
OSCILLATOR
Oscillator Frequency SYNC = FREQ = GND (f
SW
= f
OSC
) 240 300 370 kHz
SYNC = GND, FREQ = VREG (f
SW
= f
OSC
) 480 600 720 kHz
SYNC Synchronization Range
2
FREQ = GND, SYNC = 600 kHz to 1.2 MHz (f
SW
= f
SYNC
/2) 300 600 kHz
FREQ = VREG, SYNC = 1.2 MHz to 2 MHz (f
SW
= f
SYNC
/2)
600
1000
kHz
SYNC Minimum Input Pulse Width 200 ns
CURRENT SENSE
CSL1, CSL2 Threshold Voltage Relative to PGND −30 0 +30 mV
CSL1, CSL2 Output Current CSL1, CSL2 = PGND 44 50 56 μA
Current Sense Blanking Period 100 ns
GATE DRIVERS
DH1, DH2 Rise Time C
DH
= 3 nF, V
BST
− V
SW
= 5 V 15 ns
DH1, DH2 Fall Time C
DH
= 3 nF, V
BST
− V
SW
= 5 V 10 ns
DL1, DL2 Rise Time C
DL
= 3 nF 15 ns
DL1, DL2 Fall Time C
DL
= 3 nF 10 ns
DH to DL, DL to DH Dead Time
40
ns
LOGIC THRESHOLDS
SYNC, FREQ, LDOSD Input High Voltage 2.2 V
SYNC, FREQ, LDOSD Input Low Voltage 0.4 V
SYNC, FREQ Input Leakage Current SYNC, FREQ = 0 V to 5.5 V 1 μA
LDOSD Pull-Down Resistance 100 kΩ
EN1, EN2 Input High Voltage IN = 3.0 V to 20 V 2.0 V
EN1, EN2 Input Low Voltage IN = 3.0 V to 20 V 0.8 V
EN1, EN2 Current Source EN1, EN2 = 0 V to 3.0 V −0.3 −0.6 −1.5 μA
EN1, EN2 Input Impedance to 5 V Zener
EN1, EN2 = 5.5 V to 20 V
100
kΩ
THERMAL SHUTDOWN
Thermal Shutdown Threshold
3
145
°C
Thermal Shutdown Hysteresis
3
15
°C
POWER GOOD
FB1, UV2 Overvoltage Threshold V
FB1,
V
UV2
rising 750 mV
FB1, UV2 Overvoltage Hysteresis 50 mV
FB1, UV2 Undervoltage Threshold V
FB1,
V
UV2
rising 550 mV
FB1, UV2 Undervoltage Hysteresis 50 mV
POK1, POK2 Propagation Delay 8 μs
POK1, POK2 Off Leakage Current V
POK1,
V
POK2
= 5.5 V 1 μA
POK1, POK2 Output Low Voltage I
POK1,
I
POK2
= 10 mA 150 500 mV
UV2 Input Bias Current 10 100 nA
1
Not recommended to use the LDO in dropout when V
IN
< 5.5 V because of the dropout voltage. Connect IN to VREG when V
IN
< 5.5 V.
2
SYNC input frequency is 2× single-channel switching frequency. The SYNC frequency is divided by 2 and the separate phases were used to clock the controllers.
3
Guaranteed by design and not subject to production test.