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ADP1823 Datasheet(PDF) 4 Page - Analog Devices

No. de Pieza. ADP1823
Descripción  Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking
Descarga  32 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADP1823 Datasheet(HTML) 4 Page - Analog Devices

 
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ADP1823
Rev. A | Page 4 of 32
Parameter
Conditions
Min
Typ
Max
Unit
OSCILLATOR
Oscillator Frequency
SYNC = FREQ = GND (fSW = fOSC)
240
300
370
kHz
SYNC = GND, FREQ = VREG (fSW = fOSC)
480
600
720
kHz
SYNC Synchronization Range
FREQ = GND, SYNC = 600 kHz to 1.2 MHz1 (fSW = fSYNC/2)
300
600
kHz
FREQ = VREG, SYNC = 1.2 MHz to 2 MHz1 (fSW = fSYNC/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
CDH = 3 nF, VBST − VSW = 5 V
15
ns
DH1, DH2 Fall Time
CDH = 3 nF, VBST − VSW = 5 V
10
ns
DL1, DL2 Rise Time
CDL = 3 nF
15
ns
DL1, DL2 Fall Time
CDL = 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
EN1, EN2 Input High Voltage
IN = 2.9 V to 20 V
2.0
V
EN1, EN2 Input Low Voltage
IN = 2.9 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
THERMAL SHUTDOWN
Thermal Shutdown Threshold2
145
°C
Thermal Shutdown Hysteresis2
15
°C
POWER GOOD
FB1, UV2 Overvoltage Threshold
VFB1, VUV2 rising
750
mV
FB1, UV2 Overvoltage Hysteresis
50
mV
FB1, UV2 Undervoltage Threshold
VFB1, VUV2 rising
550
mV
FB1, UV2 Undervoltage Hysteresis
50
mV
POK1, POK2 Propagation Delay
8
μs
POK1, POK2 Off Leakage Current
VPOK1, VPOK2 = 5.5 V
1
μA
POK1, POK2 Output Low Voltage
IPOK1, IPOK2 = 10 mA
150
500
mV
UV2 Input Bias Current
10
100
nA
1 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.
2 Guaranteed by design and not subject to production test.


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