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ADM8828 Fiches technique(PDF) 2 Page - Analog Devices

No de pièce ADM8828
Description  Switched-Capacitor Voltage Inverter with Shutdown
Download  6 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

ADM8828 Fiches technique(HTML) 2 Page - Analog Devices

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–2–
REV. A
ADM8828/ADM8829–SPECIFICATIONS
(VIN = +5 V, C1, C2 = 1 F,
1 T
A = TMIN to TMAX unless other-
wise noted)
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
Input Voltage, IN
1.5
5.5
V
RL = 10 kΩ
Supply Current
600
1000
µA
Unloaded
Output Current
25
mA
Output Resistance
18
28
IL = 5 mA
Output Ripple
25
mV p-p
IL = 5 mA
130
mV p-p
IL = 25 mA
Charge-Pump Frequency
50
120
190
kHz
65
kHz
VIN = +2.25 V
Power Efficiency
90
%
RL = 200 Ω
87
%
RL = 1 kΩ
Voltage Conversion Efficiency
99.5
99.96
%
No Load
98
%
RL = 1 kΩ
91
%
RL = 200 Ω
Shutdown Supply Current, ISHDN
0.02
2
µA
SHDN = IN
Shutdown Input Voltage, VSHDN
2.0
V
SHDN High = Disabled
0.8
V
SHDN Low = Enabled
Shutdown Exit Time
175
µsI
L = 5 mA
NOTES
1C1 and C2 are low ESR (<0.2
Ω) electrolytic capacitors. High ESR will degrade performance.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C unless otherwise noted)
Input Voltage (IN to GND) . . . . . . . . . . . . . . . –0.3 V to +6 V
OUT to GND . . . . . . . . . . . . . . . . . . . . . . . . –6.0 V to +0.3 V
OUT, IN Output Current (Continuous) . . . . . . . . . . . . 50 mA
Output Short Circuit Duration to GND . . . . . . . . . . . 10 secs
Power Dissipation, RT-6 . . . . . . . . . . . . . . . . . . . . . . 570 mW
(Derate 8.3 mW/
°C above +70°C)
θ
JA, Thermal Impedance
. . . . . . . . . . . . . . . . . . . . 120
°C/W
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . – 40
°C to +85°C
Storage Temperature Range . . . . . . . . . . . –65
°C to +150°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . +300
°C
Vapor Phase (70 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215
°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >3500 V
*This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation section of this specification
is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
ORDERING GUIDE
Temperature
Branding
Package
Model
Range
Information
Option*
ADM8828ART
–40
°C to +85°C
MM0
RT-6
ADM8829ART
–40
°C to +85°C
MN0
RT-6
*RT-6 = 6-lead SOT-23.
PIN CONFIGURATIONS
TOP VIEW
(Not to Scale)
OUT
IN
CAP–
CAP+
SHDN
GND
ADM8828
1
2
3
6
5
4
TOP VIEW
(Not to Scale)
OUT
IN
CAP+
NC
GND
ADM8829
1
2
3
6
5
4
CAP–
NC = NO CONNECT
PIN FUNCTION DESCRIPTIONS
Mnemonic
Function
CAP+
Positive Charge-Pump Capacitor Terminal.
GND
Power Supply Ground.
CAP–
Negative Charge-Pump Capacitor Terminal.
OUT
Output, Negative Voltage.
SHDN
Shutdown Control Input. This input, when
high, is used to disable the charge pump
thereby reducing the power consumption.
IN
Positive Power Supply Input.


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