MAX1760EUB-T Maxim Integrated Products, MAX1760EUB-T Datasheet - Page 4

• Manufacturer Part Number: MAX1760EUB-T
• Description: DC/DC Switching Converters 0.8A Low-Noise 1MHz Step-Up
• Manufacturer: Maxim Integrated Products

0.8A, Low-Noise, 1MHz,
Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
(CLK/SEL = FB = PGND = GND, ISET = REF, OUT = POUT, V
4
(Circuit of Figure 2, V
Note 1: Operating voltage—since the regulator is bootstrapped to the output, once started, the MAX1760 operates down
Note 2: Startup is tested with the circuit shown in Figure 6.
Note 3: Defines maximum step-up ratio.
Note 4: The regulator is in startup mode until this voltage is reached. Do not apply full load current until the output exceeds 2.3V.
Note 5: Supply current into the OUT pin. This current correlates directly to the actual battery-supply current, but is reduced in
Note 6: ON (MAX1760) and ON (MAX1760H) have a hysteresis of approximately 0.15
Note 7: Specifications to -40°C are guaranteed by design and not production tested.
N-Channel Current Limit
REFERENCE
Reference Output Voltage
LOGIC INPUTS
CLK/SEL Input Low Level
CLK/SEL Input High Level
ON, ON Input Low Level (Note 6)
ON, ON Input High Level (Note 6)
Input Leakage Current
100
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
0
0.0001
to 0.7V input.
value according to the step-up ratio and efficiency.
EFFICIENCY vs. OUTPUT CURRENT
0.001
PARAMETER
OUTPUT CURRENT (A)
V
OUT
IN
0.01
C: V
= 2.4V, V
= 3.3V
A: V
B: V
IN
IN
IN
= 2.4V
= 1.2V
= 0.9V
= FPWM MODE
= AUTO MODE
0.1
OUT
C
= 3.3V, T
B
A
1
A
= +25°C, unless otherwise noted.)
I
2.5V
2.5V
1.1V
1.8V
1.1V
1.8V
CLK/SEL, ON, ON
REF
100
90
80
70
60
50
40
30
20
10
0.0001
0
= 0
EFFICIENCY vs. OUTPUT CURRENT
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
0.001
OUT
OUTPUT CURRENT (A)
5.5V
5.5V
1.8V
5.5V
1.8V
5.5V
CONDITIONS
= 3.6V, T
V
OUT
0.01
A: V
B: V
C: V
= 5V
Typical Operating Characteristics
IN
IN
IN
= 3.6V
= 2.4V
A
= 1.2V
= FPWM MODE
= AUTO MODE
= -40°C to +85°C, unless otherwise noted.) (Note 7)
0.1
C
B
A
1
V
OUT
.
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.5
V
1.230
V
MIN
0.8 x
1.0
OUT
1.6
OUT
MAXIMUM OUTPUT CURRENT
1.0
+ 0.2
V
OUT
vs. INPUT VOLTAGE
1.5
INPUT VOLTAGE (V)
= 3.3V
2.0
2.5
1.270
MAX
V
0.2 x
1.6
0.2
0.4
OUT
1
3.0
V
OUT
= 5V
3.5
UNITS
µA
A
V
V
V
V
V
4.0