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MAX1703ESE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(CLK/SEL = AIN = ON = POKIN = FB = PGND = GND, OUT = POUT, LXP = LXN, V
OUT
= 5.3V (Note 1), T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at T
A
= +25°C.) (Note 8)
CLK/SEL = GND
CLK/SEL = OUT
CLK/SEL = GND
CLK/SEL = OUT
N-channel
CONDITIONS
P-channel
Rising V
POKIN
V1.225 1.275POKIN Trip Level
0.25
Switch On-Resistance
mA500 1100
N-Channel Current Limit
mA2200 3600
0.13
I
AO
= 20µA
Ω
0.25
V1.23 1.27AIN Reference Voltage
UNITSMIN TYP MAXPARAMETER
Note 1: Supply current from the 5.05V output is measured between the 5.05V output and the OUT pin. This current correlates
directly to the actual battery supply current, but is reduced in value according to the step-up ratio and efficiency. Set
V
OUT
= 5.3V to keep the internal switch open when measuring the device operating current.
Note 2: Minimum operating voltage. Since the regulator is bootstrapped to the output, once started it will operate down to a 0.7V
input.
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
synchronized).
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
OUT
.
Note 8: Specifications to -40°C are guaranteed by design and not production tested.
10µA < I
AO
< 100µA mmho516Transconductance
I
REF
= 0µA V1.23 1.27Reference Output Voltage
CLK/SEL = OUT, V
FB
= 0.5V kHz260 340Internal Oscillator Frequency
CLK/SEL = OUT, V
FB
= 0.5V %80 92Oscillator Maximum Duty Cycle
DC-DC SWITCHES
POWER-GOOD COMPARATOR
GAIN BLOCK
REFERENCE
LOGIC INPUTS
MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
_______________________________________________________________________________________
5
100
40
0.1 1 10 100 1000 10,000
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 5V)
50
MAX1703-01
LOAD CURRENT (mA)
EFFICIENCY (%)
60
80
70
90
V
IN
= 3.6V
V
IN
= 2.4V
V
IN
= 1.2V
PFM
PWM
100
40
0.1 1 10 100 1000 10,000
EFFICIENCY vs. LOAD CURRENT
(V
OUT
= 3.3V)
50
MAX1703-02
LOAD CURRENT (mA)
EFFICIENCY (%)
60
80
70
90
V
IN
= 2.4V
V
IN
= 1.2V
V
IN
= 0.9V
PFM
PWM
0
1
2
3
4
03412 56
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX1703-03
INPUT VOLTAGE (V)
BATTERY CURRENT (mA)
T
A
= +85°C
LOW-POWER MODE
T
A
= +25°C
T
A
= -40°C
0
0.5
1.0
2.0
1.5
2.5
0.5 3.0 3.5 4.01.0 1.5 2.0 2.5 4.5 5.0 5.5
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1703-04
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (µA)
T
A
= +85°C
INCLUDES ALL EXTERNAL
COMPONENT LEAKAGES.
CAPACITOR LEAKAGE
DOMINATES AT T
A
= +85°C
T
A
= +25°C,
T
A
= -40°C
1.2460
1.2470
1.2490
1.2480
1.2500
1.2510
1.2520
0 4050 607010 20 30 80 90
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
MAX1703-07
REFERENCE CURRENT (µA)
REFERENCE VOLTAGE (V)
V
IN
= 3.6V
V
OUT
= 5V
LOW-POWER MODE
2.0
0.6
0.01 0.1 1 10 100 1000
START-UP VOLTAGE vs. LOAD CURRENT
0.8
MAX1703-05
LOAD CURRENT (mA)
START-UP VOLTAGE (V)
1.0
1.2
1.6
1.4
1.8
V
OUT
= 5V
PWM MODE
1.2450
1.2490
1.2470
1.2510
1.2530
1.2550
-40 20 40 60-20 0 80 100
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1703-06
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
9
100 1k 10k 100k 1M 10M
NOISE SPECTRUM
1
0
-1
MAX1703-14
FREQUENCY (Hz)
NOISE (mV
RMS
)
2
6
7
5
4
3
8
V
OUT
= 5V
V
IN
= 3.6V
I
LOAD
= 500mA
__________________________________________Typical Operating Characteristics
(V
IN
= +3.6V, V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)
MAX1703
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
6 _______________________________________________________________________________________
_________________________________Typical Operating Characteristics (continued)
(V
IN
= +3.6V, V
OUT
= 5V, T
A
= +25°C, unless otherwise noted.)
260
290
280
270
310
300
320
330
340
-40 20 40 60-20 0 80 100
FREQUENCY vs. TEMPERATURE
MAX1703-15
TEMPERATURE (°C)
FREQUENCY (kHz)
V
OUT
= 5V
V
OUT
= 3.3V
0.5
1.5
1.0
2.5
2.0
3.0
3.5
2.5 4.0 4.53.0 3.5 5.0 5.5
PEAK INDUCTOR CURRENT LIMIT
vs. OUTPUT VOLTAGE
MAX1703-16
OUTPUT VOLTAGE (V)
CURRENT LIMIT(A)
PWM
LOW POWER (PFM)
2µs/div
I
LOAD
= 1.5A, C7 = 0.47µF
HEAVY LOAD SWITCHING
MAX1703-08
2ms/div
V
OUT
IS AC COUPLED
LOAD CURRENT = 0A TO 1.5A
V
OUT
(50mV/div)
1.0A
0.5A
0A
LOAD-TRANSIENT RESPONSE
MAX1703-10
2ms/div
V
IN
= 2.6V TO 3.6V, V
OUT
IS AC COUPLED
V
OUT
(50mV/div)
V
IN
4V
2V
0V
LINE-TRANSIENT RESPONSE
MAX1703-09
1ms/div
V
IN
= 2.6V TO 3.6V, V
OUT
IS AC COUPLED
V
ON
V
OUT
(2V/div)
I
IN
(0.2A/div)
POWER-ON DELAY
(PFM MODE)
MAX1703-11
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX1703ESE+T

Mfr. #:
Buy MAX1703ESE+T
Manufacturer:
Maxim Integrated
Description:
Switching Voltage Regulators 1-3 Cell 1A Step-Up DC/DC Converters
Lifecycle:
New from this manufacturer.
Delivery:
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