Rainbow Electronics MAX1703 User Manual
Page 2
Switch On-Resistance
MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(CLK/SEL = AIN =
ON = POKIN = FB = PGND = GND, OUT = POUT, LXP = LXN, V
OUT
= 5.3V (Note 1),
T
A
= 0°C to +85°C
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
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.
OUT, ON, AO, POK to GND .....................................-0.3V to +6V
PGND to GND.....................................................................±0.3V
LXP, LXN to PGND .................................-0.3V to (V
POUT
+ 0.3V)
POUT, CLK/SEL, AIN, REF, FB,
POKIN to GND.......................................-0.3V to (V
OUT
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
Narrow SO (derate 8.70mW/°C above +70°C) .............696mW
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
I
LOAD
< 1mA, T
A
= +25°C (Note 3)
CLK/SEL = GND
CLK/SEL = GND
(Note 2)
CLK/SEL = OUT
N-channel
V
ON
= V
LXN
= V
OUT
= 5.5V
ON = OUT
CLK/SEL = OUT, no load to full load
V
LXP
= 0V, V
OUT
= V
ON
= 5.5V
(Note 5)
V
OUT
= 1.5V
V
FB
< 0.1V, CLK/SEL = OUT,
0
≤
I
LX
≤
1.1A, V
BATT
= 3.7V
Adjustable output, CLK/SEL = OUT,
0
≤
I
LX
≤
1.1A, V
BATT
= 2.2V, V
OUT
= 3.3V
CLK/SEL = OUT (Note 1)
V
FB
= 1.25V
CLK/SEL = GND (Note 1)
CONDITIONS
mA
20
160
260
P-Channel Turn-Off Current
mA
500
800
1100
N-Channel Current Limit
mA
2200
2700
3200
0.075
0.13
Ω
0.14
0.25
µA
0.1
20
LXN Leakage Current
µA
0.1
20
POUT, LXP Leakage Current
µA
150
300
Supply Current in Low-Noise Mode
µA
65
120
Supply Current in Low-Power Mode
V
0.9
1.1
Minimum Start-Up Voltage
V
0.7
5.5
Input Supply Range
µA
0.1
20
Supply Current in Shutdown
%
-1.6
Load Regulation (Note 6)
V
2.0
2.15
2.3
Output Voltage Lockout Threshold
V
2.5
5.5
Output Voltage Adjust Range
kHz
40
140
300
Frequency in Start-Up Mode
V
4.87
5.05
5.20
Output Voltage
(Note 4)
V
1.21
1.24
1.255
FB Regulation Voltage
nA
0.1
20
FB Input Current
UNITS
MIN
TYP
MAX
PARAMETER
P-channel
0.13
0.25
Switch On-Resistance
CLK/SEL = GND
CLK/SEL = OUT
Rising V
POKIN
V
1.225
1.250
1.275
POKIN Trip Level
V
POKIN
= 0.7V
nA
-20
20
POKIN Input Current
I
SINK
(POK) = 1mA, V
OUT
= 3.6V or
I
SINK
(POK) = 20µA, V
OUT
= 1V
V
0.03
0.4
POK Low Voltage
V
OUT
= V
POK
= 5.5V
µA
0.01
1
POK High Leakage Current
DC-DC CONVERTER
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