MAX1703 Maxim, MAX1703 Datasheet - Page 4

• Manufacturer Part Number: MAX1703
• Description: 1-Cell to 3-Cell / High-Power 1.5A / Low-Noise / Step-Up DC-DC Converter
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(CLK/SEL = AIN = ON = POKIN = FB = PGND = GND, OUT = POUT, LXP = LXN, V
otherwise noted. Typical values are at T
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
4
Note 1: Supply current from the 5.05V output is measured between the 5.05V output and the OUT pin. This current correlates
Note 2: Minimum operating voltage. Since the regulator is bootstrapped to the output, once started it will operate down to a 0.7V
Note 3: Start-up is tested with the circuit of Figure 2.
Note 4: In low-power mode (CLK/SEL = GND) the output voltage regulates 1% higher than low-noise mode (CLK/SEL = OUT or
Note 5: The regulator is in start-up mode until this voltage is reached. Do not apply full-load current below this voltage.
Note 6: Load regulation is measured from no-load to full load, where full load is determined by the N-channel switch current limit.
Note 7: The ON input has a total hysteresis of approximately 0.15 x V
Note 8: Specifications to -40°C are guaranteed by design and not production tested.
DC-DC SWITCHES
Switch On-Resistance
N-Channel Current Limit
POWER-GOOD COMPARATOR
POKIN Trip Level
GAIN BLOCK
AIN Reference Voltage
Transconductance
REFERENCE
Reference Output Voltage
LOGIC INPUTS
Internal Oscillator Frequency
Oscillator Maximum Duty Cycle
_______________________________________________________________________________________
directly to the actual battery supply current, but is reduced in value according to the step-up ratio and efficiency. Set
V
input.
synchronized).
OUT
PARAMETER
= 5.3V to keep the internal switch open when measuring the device operating current.
A
N-channel
P-channel
CLK/SEL = OUT
CLK/SEL = GND
Rising V
I
10µA < I
I
CLK/SEL = OUT, V
CLK/SEL = OUT, V
AO
REF
= +25°C.) (Note 8)
= 20µA
= 0µA
POKIN
AO
< 100µA
FB
FB
CONDITIONS
= 0.5V
= 0.5V
CLK/SEL = GND
CLK/SEL = OUT
OUT
.
OUT
= 5.3V (Note 1), T
1.225
2200
1.23
1.23
MIN
500
260
80
5
A
TYP
= -40°C to +85°C, unless
1.275
3600
MAX
1100
0.25
0.13
0.25
1.27
1.27
340
16
92
UNITS
mmho
kHz
mA
mA
%
Ω
V
V
V