MAX868 Maxim, MAX868 Datasheet - Page 2

• Manufacturer Part Number: MAX868
• Description: Regulated / Adjustable -2x Inverting Charge Pump
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
IN to GND .................................................................-0.3V to +6V
OUT to GND ...........................................................+0.3V to -12V
IN to OUT.................................................................-0.3V to -17V
C1+ to GND ........................................(V
C1- to GND.............................................................+0.3V to -12V
C2+ to GND ....................................................(V
C2- to GND...............................................................+0.3V to -6V
SHDN, FB to GND .......................................-0.3V to (V
PGND to GND .......................................................-0.3V to +0.3V
Regulated, Adjustable -2x
Inverting Charge Pump
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
are at T
2
Supply-Voltage Range
Supply Current
Shutdown Current
Oscillator Frequency
Closed-Loop Output
Resistance
Open-Loop Output
Resistance
FB Trip Point
Output Current
FB Input Bias Current
SHDN Input Threshold
SHDN Input Bias Current
IN
_______________________________________________________________________________________
= +3.3V,
PARAMETER
A
= +25°C.)
SHDN = IN, C1 = C2 = 0.22µF, C
SYMBOL
I
R
IN
OUT,CL
R
f
I
,
OSC
V
OUT
V
V
I
OUT
SHDN
IN
IN
IH
IL
IN
R
No load, V
FB = IN
No load, SHDN = GND
V
V
I
SHDN = GND (OUT pulls to GND)
V
Closed loop
V
V
V
OUT
- 12V) to (V
FB
OUT
IN
IN
IN
IN
L
= 3kΩ to GND
= 1.8V to 5.5V
= 1.8V to 5.5V, T
= 1.8V to 5.5V
= 5.5V, SHDN = IN or GND
= 50mV
= 5mA, FB = IN
IN
= -5V
IN
+ 0.3V) to -6V
= 1µF, C
FB
IN
IN
= -50mV
+ 0.3V)
+ 0.3V)
OUT
CONDITIONS
A
= +25°C
= 10µF, T
T
T
T
T
T
T
V
V
Output Current ....................................................................35mA
Short-Circuit Duration.................................................Continuous
Continuous Power Dissipation (T
Operating Temperature Range
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
A
A
A
A
A
A
IN
IN
= +25°C
= 0°C to +85°C
= +25°C
= 0°C to +85°C
= +25°C
= 0°C to +85°C
10-pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
MAX868EUB ....................................................-40°C to +85°C
= 3.3V, V
= 5V, V
A
= 0°C to +85°C, unless otherwise noted. Typical values
OUT
OUT
= -3.3V
= -5V
0.3V
-100
MIN
293
270
1.8
-30
-40
-50
IN
A
= +70°C)
TYP
450
0.1
0.2
30
70
15
12
30
5
1
1
0.7V
MAX
607
630
100
125
100
5.5
50
50
30
40
50
1
IN
UNITS
kHz
mA
mA
mV
mV
µA
µA
nA
nA
Ω
Ω
V
V