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MAX1642C/D датащи(PDF) 3 Page - Maxim Integrated Products

номер детали MAX1642C/D
подробное описание детали  High-Efficiency, Step-Up DC-DC Converters for 1V Inputs
PDF  12 Pages
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производитель  MAXIM [Maxim Integrated Products]
домашняя страница  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1642C/D датащи(HTML) 3 Page - Maxim Integrated Products

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High-Efficiency, Step-Up
DC-DC Converters for 1V Inputs
_______________________________________________________________________________________
3
Note 2: Start-up guaranteed by correlation to measurements of device parameters (i.e., switch on-resistance, on-times, off-times, and
output voltage trip points).
Note 3:
. This guarantees discontinuous conduction.
Note 4: Specifications to -40°C are guaranteed by design, not production tested.
t
=
t
x V
V
- V
x RATIO
OFF
ON
BATT
OUT
BATT
Falling PFI, hysteresis = 1%
VBATT = 1.0V (MAX1642)
0.9V < VBATT < 1.5V (tON = K / VBATT)
VOUT = 3.5V (MAX1642)
VOUT = 3.3V
VFB < 0.1V
External feedback
VOUT = 3.5V
VOUT = 3.3V
CONDITIONS
mV
550
662
PFI Trip Voltage
µA
3.5
ISHDN,BATT
Shutdown Current into BATT
µA
1
ISHDN,OUT
Shutdown Current into OUT
µA
6.5
IQBATT
Quiescent Current into BATT
µA
18
IQOUT
Quiescent Current into OUT
V-µs
12.4
38.2
K
On-Time Constant
Ω
2.2
P-Channel On-Resistance
V
2.99
3.56
VOUT
Output Voltage
V
1.11
1.32
VFB
FB Set Voltage
Ω
1.5
N-Channel On-Resistance
UNITS
MIN
MAX
SYMBOL
PARAMETER
ELECTRICAL CHARACTERISTICS
(VBATT = VSHDN = 1.3V, ILOAD = 0mA, FB = GND, TA = -40°C to +85°C, unless otherwise noted.) (Note 4)
Falling VBATT, VOUT = 3.3V, hysteresis = 2%
(MAX1643)
V
0.93
1.06
BATTLO Trip Voltage
__________________________________________Typical Operating Characteristics
(Circuit of Figure 4, VBATT = 1.2V, R1 + R2 = 1MΩ, TA = +25°C, unless otherwise noted.)
0
0.01
1
10
0.1
100
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 2.4V)
10
OUTPUT CURRENT (mA)
VIN = 1.6V
L1 = 100
µH
SUMIDA CD54-101
VIN = 1.2V
VIN = 0.85V
VIN = 1.0V
20
30
40
50
60
70
80
90
100
0
0.01
1
10
0.1
100
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 2.4V)
10
OUTPUT CURRENT (mA)
VIN = 1.6V
L1 = 150
µH
TDK NLC565050T-151K
VIN = 1.2V
VIN = 0.85V
VIN = 1.0V
20
30
40
50
60
70
80
90
100
0
0.01
1
10
0.1
100
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 3.3V)
10
OUTPUT CURRENT (mA)
VIN = 1.6V
L1 = 100
µH
SUMIDA CD54-101
VIN = 1.2V
VIN = 0.85V
VIN = 1.0V
20
30
40
50
60
70
80
90
100



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