–2–
REV. A
ADM8828/ADM8829–SPECIFICATIONS
(V
IN
= +5 V, C1, C2 = 1 mF,
1
T
A
= T
MIN
to T
MAX
unless other-
wise noted)
Parameter Min Typ Max Units Test Conditions/Comments
Input Voltage, IN 1.5 5.5 V R
L
= 10 kΩ
Supply Current 600 1000 µA Unloaded
Output Current 25 mA
Output Resistance 18 28 Ω I
L
= 5 mA
Output Ripple 25 mV p-p I
L
= 5 mA
130 mV p-p I
L
= 25 mA
Charge-Pump Frequency 50 120 190 kHz
65 kHz V
IN
= +2.25 V
Power Efficiency 90 % R
L
= 200 Ω
87 % R
L
= 1 kΩ
Voltage Conversion Efficiency 99.5 99.96 % No Load
98 % R
L
= 1 kΩ
91 % R
L
= 200 Ω
Shutdown Supply Current, I
SHDN
0.02 2 µA SHDN = IN
Shutdown Input Voltage, V
SHDN
2.0 V SHDN High = Disabled
0.8 V SHDN Low = Enabled
Shutdown Exit Time 175 µsI
L
= 5 mA
NOTES
1
C1 and C2 are low ESR (<0.2 Ω) electrolytic capacitors. High ESR will degrade performance.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +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.
