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ADP1853ACPZ-R7 数据表(PDF) 3 Page - Analog Devices

部件名 ADP1853ACPZ-R7
功能描述  Synchronous, Step-Down DC-to-DC Controller
PDF  28 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP1853ACPZ-R7 数据表(HTML) 3 Page - Analog Devices

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Data Sheet
ADP1853
Rev. 0 | Page 3 of 28
SPECIFICATIONS
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). VIN = 12 V. The
specifications are valid for TJ = −40°C to +125°C, unless otherwise specified. Typical values are at TA = 25°C.
Table 1.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
POWER SUPPLY
Input Voltage
V
IN
2.75
20
V
Undervoltage Lockout Threshold
UVLO
TRSH
V
IN rising
2.55
2.65
2.75
V
V
IN falling
2.35
2.45
2.50
V
Undervoltage Lockout Hysteresis
UVLO
HYST
0.2
V
Quiescent Current
I
IN
EN = V
IN = 12 V, VFB = VCCO in forced pulse width
modulation (PWM) mode (no switching)
4.2
5.7
mA
EN = V
IN = 12 V, VFB = VCCO in PSM mode
2.5
mA
Shutdown Current
I
IN_SD
EN = GND, V
IN = 5.5 V or 20 V
100
200
µA
ERROR AMPLIFIER
FB Input Bias Current
I
FB
−100
+1
+100
nA
Open-Loop Gain1
80
dB
Gain-Bandwidth Product1
20
MHz
TRK Input Bias Current
I
TRK
0 V ≤ V
TRK ≤ 5 V
−100
+1
+100
nA
CURRENT SENSE AMPLIFIER GAIN
A
CS
Gain resistor connected to DL,
R
CSG = 47 kΩ ± 5%
2.6
3
3.4
V/V
Gain resistor connected to DL,
R
CSG = 22 kΩ ± 5%
5.2
6
6.8
V/V
Default setting, R
CSG = open
10.5
12
13.5
V/V
Voltage mode operation, resistor DL to PGND,
R
CSG = 100 kΩ ± 5%
0
V/V
OUTPUT CHARACTERICTISTICS
Feedback Accuracy Voltage
V
FB
T
J = −40°C to +85°C
597
600
603
mV
T
J = −40°C to +125°C
594
600
606
mV
Line Regulation of PWM
V
FB/VIN
±0.015
%/V
Load Regulation of PWM1
V
FB/VCOMP
V
COMP range = 0.9 V to 2.2 V
±0.3
%
OSCILLATOR
Frequency
f
OSC
R
FREQ = 332 kΩ to AGND
170
200
230
kHz
R
FREQ = 78.7 kΩ to AGND
720
800
880
kHz
R
FREQ = 40.2 kΩ to AGND
1275
1500
1725
kHz
FREQ to AGND
240
300
360
kHz
FREQ to VCCO
480
600
720
kHz
SYNC Input Frequency Range1
f
SYNC
R
FREQ range from 332 kΩ to 40.2 kΩ
170
1725
kHz
SYNC Input Pulse Width1
t
SYNCMIN
100
ns
SYNC Pin Capacitance to GND
C
SYNC
5
pF
CLKOUT Frequency Range1
f
CLKOUT
f
OSC range from 170 kHz to 1725 kHz
170
1725
kHz
CLKOUT Pulse Duty Cycle
D
CLKOUT
50
%
CLKOUT Rise and Fall Time
C
CLKOUT = 47 pF
10
ns
LINEAR REGULATOR
VCCO Output Voltage
I
VCCO = 100 mA
4.7
5.0
5.3
V
VCCO Load Regulation
I
VCCO = 0 mA to 100 mA
35
mV
VCCO Line Regulation
V
IN = 5.5 V to 20 V, IVCCO = 20 mA
10
mV
VCCO Current Limit1
VCCO drops to 4 V from 5 V
350
mA
VCCO Short-Circuit Current1
VCCO < 0.5 V
370
400
mA
VIN to VCCO Dropout Voltage2
V
DROPOUT
I
VCCO = 100 mA, VIN ≤ 5 V
0.33
V



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