Rainbow Electronics MAX1673 User Manual
Page 2
MAX1673
Regulated, 125mA-Output,
Charge-Pump DC-DC Inverter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
SHDN
= +5V, C
IN
= 10µF, C
OUT
= 22µF, C
FLY
= 2.2µF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
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.
IN ..............................................................................-0.3V to +6V
CAP+, FB, LIN/SKIP.....................................-0.3V to (V
IN
+ 0.3V)
SHDN........................................................................-0.3V to +6V
OUT, CAP-................................................................-6V to +0.3V
Continuous Output Current ...............................................135mA
Output Short-Circuit Duration to GND (Note 1) ....................1sec
Continuous Power Dissipation (T
A
= +70°C)
(derate 5.88mW/°C above +70°C) ...............................450mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
Shorting OUT to IN may damage the device and should be avoided.
Output Resistance to Ground
in Shutdown Mode
1
5
Ω
SHDN = GND
Load Regulation
∆
V
LDR
0.01
%/mA
0.005
LIN/SKIP = IN
(LIN mode)
LIN/SKIP = GND
(Skip mode)
I
OUT
= 25mA to
125mA, Figure 1
LIN/SKIP = GND
(Skip mode)
LIN/SKIP = IN
(LIN mode)
SHDN = GND
V
FB
= -25mV, V
OUT
= -3V,
LIN/SKIP = GND (Skip mode)
V
FB
= -100mV, V
OUT
= -3V,
LIN/SKIP = IN (LIN mode)
LIN/SKIP = GND
(Skip mode)
LIN/SKIP = IN
(LIN mode)
R1 =100k
Ω
, ±1%,
R2 = 60.4k
Ω
, ±1%,
I
OUT
= 0mA to
125mA, Figure 1
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Output Voltage
V
OUT
-2.90
-3.02
-3.15
Maximum Output Current
I
OUT(MAX)
125
mA
Minimum Output Voltage
-1.5
-2.92
-3.02
-3.12
V
Input Voltage Range
V
IN
2.0
5.5
V
2.7
5.5
V
OUT
0
V
Quiescent Current (I
IN
Current)
I
Q
8
16
mA
0.035
0.2
Shutdown Current (I
IN
Current)
I
SHDN
0.1
1
µA
Line Regulation
∆
V
LNR
0.01
%/V
1
Open-Loop Output Resistance
(Dropout)
R
O
3.5
10
Ω
CONDITIONS
LIN/SKIP = IN
V
IN
= 4.5V to 5.5V,
Figure 4,
V
REF
≠
V
IN
LIN/SKIP = GND (Skip mode)
LIN/SKIP = IN (LIN mode)
LIN/SKIP = GND
LIN/SKIP = GND (Skip mode)