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ADP5072 Datasheet(PDF) 3 Page - Analog Devices

Part # ADP5072
Description  1 A/0.6 A DC to DC Switching Regulator Independent Positive and Negative Outputs
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP5072 Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
ADP5072
Rev. 0 | Page 3 of 24
SPECIFICATIONS
PVIN = AVIN = 2.85 V to 5.5 V, positive output voltage (VPOS) = 15 V, negative output voltage (VNEG) = −15 V, fSW = 1200 kHz, TJ = −40°C
to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 2.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
INPUT SUPPLY VOLTAGE RANGE
VIN
2.85
5.5
V
PVIN, AVIN
QUIESCENT CURRENT
Operating Quiescent Current
PVIN, AVIN (Total)
IQ
3.5
4.0
mA
No switching, EN1 = EN2 =
high, PVIN = AVIN = 5 V
Standby Current
ISTNDBY
2.05
2.2
mA
No switching, EN1 = EN2 =
low, PVIN = AVIN = 5 V
UVLO
System UVLO Threshold
AVIN
Rising
VUVLO_RISING
2.8
2.85
V
Falling
VUVLO_FALLING
2.5
2.55
V
Hysteresis
VHYS
0.25
V
OSCILLATOR CIRCUIT
Switching Frequency
fSW
1.130
1.2
1.270
MHz
SYNC = low
2.240
2.4
2.560
MHz
SYNC = high (connect to
PVIN)
SYNC Input
Input Clock Range
fSYNC
1.0
2.6
MHz
Input Clock Minimum On Pulse Width
tSYNC_MIN_ON
100
ns
Input Clock Minimum Off Pulse Width
tSYNC_MIN_OFF
100
ns
Input Clock High Logic
VH (SYNC)
1.3
V
Input Clock Low Logic
VL (SYNC)
0.4
V
PRECISION ENABLING (EN1, EN2)
High Level Threshold
VTH_H
1.125
1.15
1.175
V
Low Level Threshold
VTH_L
1.025
1.05
1.075
V
Shutdown Mode
VTH_S
0.4
V
Internal circuitry disabled to
achieve ISTNDBY
Pull-Down Resistance
REN
1.48
MΩ
BOOST REGULATOR
Adjustable Positive Output Voltage
VPOS
35
V
Feedback Voltage
VFB1
0.8
V
Feedback Voltage Accuracy
−0.5
+0.5
%
TJ = 25°C
−1.5
+1.5
%
TJ = −40°C to +125°C
Feedback Bias Current
IFB1
0.1
µA
Overvoltage Protection Threshold
VOV1
0.86
V
At FB1 pin
Load Regulation
(∆VFB1/VFB1)/ΔILOAD1
0.0003
%/mA
ILOAD11 = 5 mA to 150 mA
Line Regulation
(∆VFB1/VFB1)/ΔVPVIN
0.002
%/V
VPVIN = 2.85 V to 5.5 V, ILOAD1 =
50 mA
Error Amplifier (EA) Transconductance
gM1
260
300
340
µA/V
Power FET On Resistance
RDS (ON) BOOST
175
mΩ
Power FET Maximum Drain Source
Voltage
VDS (MAX) BOOST
39
V
Current-Limit Threshold, Main Switch
ILIM (BOOST)
1.0
1.1
1.3
A
Minimum On Time
50
ns
Minimum Off Time
25
ns



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