MAX1674-MAX1676 Maxim, MAX1674-MAX1676 Datasheet - Page 3

• Manufacturer Part Number: MAX1674-MAX1676
• Description: High-Efficiency / Low-Supply-Current / Compact / Step-Up DC-DC Converters
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
ELECTRICAL CHARACTERISTICS
(V
Note 1: Start-up voltage operation is guaranteed with the addition of a Schottky MBR0520 external diode between the input and
Note 2: Steady-state output current indicates that the device maintains output voltage regulation under load. See Figures 5 and 6.
Note 3: Device is bootstrapped (power to the IC comes from OUT). This correlates directly with the actual battery supply.
Operating Current into OUT
(Note 3)
Shutdown Current into OUT
Efficiency
LX Switch On-Time
LX Switch Off-Time
FB Input Current
LBI Input Current
CLSEL Input Current
SHDN Input Current
LBO Low Output Voltage
LBO Off Leakage Current
Damping Switch Resistance
SHDN Input Voltage
CLSEL Input Voltage
Output Voltage
Output Voltage Range
Reference Voltage
FB, LBI Thresholds
Internal NFET, PFET
On-Resistance
Operating Current into OUT
(Note 3)
Shutdown Current into OUT
LX Switch On-Time
LX Switch Off-Time
LX Switch Current
Limit (NFET)
BATT
BATT
= 2V, FB = OUT (V
= 2V, FB = OUT, R
output.
PARAMETER
PARAMETER
_______________________________________________________________________________________
OUT
L
= ∞, T
= 3.3V), R
Compact, Step-Up DC-DC Converters
High-Efficiency, Low-Supply-Current,
A
SYMBOL
SYMBOL
I
I
= -40°C to +85°C, unless otherwise noted.) (Note 4)
R
CLSEL
SHDN
I
t
t
I
V
V
V
DS(ON)
OFF
I
LBO
V
V
V
ON
LBI
t
I
FB
t
OFF
OUT
LIM
IH
IH
REF
ON
IL
IL
L
= ˙∞, T
V
SHDN = GND
V
V
V
V
V
V
MAX1676, CLSEL = OUT
V
V
V
MAX1676, V
FB = OUT
FB = GND
I
V
SHDN = GND
V
V
MAX1674, MAX1676 (CLSEL = OUT)
MAX1675, MAX1676 (CLSEL = GND)
REF
FB
OUT
OUT
FB
FB
FB
LBI
LBI
FB
FB
FB
SHDN
LBO
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= 1.4V, V
= 1V, V
= 1V, V
= 1.4V
= 1.4V, V
= 1V, V
= 1V, V
= 1.4V
= 0, I
= 0
= 3.3V, I
= 2V, I
= 5.5V, V
= 0 or V
SINK
OUT
OUT
OUT
OUT
BATT
LOAD
OUT
OUT
LOAD
= 1mA
LBI
CONDITIONS
OUT
= 3.3V
= 3.3V
CONDITIONS
= 3.3V
= 3.3V
= 2V
= 3.3V
= 1mA
= 3.3V
= 5.5V
= 200mA
0.8V
0.8V
1.2675
1.2675
MIN
3.13
4.75
2.20
0.75
0.75
0.36
MIN
0.8
2.7
3
OUT
OUT
TYP
0.03
0.07
0.07
0.1
85
1.4
0.2
16
90
88
4
1
1
0.2V
0.2V
A
1.3325
1.3325
MAX
= +25°C.)
MAX
150
3.47
5.25
1.25
1.25
0.69
1.2
0.4
35
50
50
50
5.5
0.6
7.0
40
1
7
3
1
OUT
OUT
1
UNITS
UNITS
µA
µA
nA
nA
µA
nA
µA
µs
µs
%
µA
µA
Ω
µs
µs
V
V
V
Ω
V
V
V
V
A
3