MAX1678 Maxim, MAX1678 Datasheet - Page 3

• Manufacturer Part Number: MAX1678
• Description: 1-Cell to 2-Cell / Low-Noise / High-Efficiency / Step-Up DC-DC Converter
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS
(V
Note 2: Start-up is guaranteed by correlation to measurements of device parameters (i.e., switch on-resistance, on-time, off-time,
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
Maximum Operating Input
Voltage
Output Voltage (Fixed Mode)
Output Voltage Range
(Adjustable Mode)
FB Set Voltage
N-Channel On-Resistance
P-Channel On-Resistance
On-Time Constant
Quiescent Current into OUT
Quiescent Current into BATT
Shutdown Current into OUT
Shutdown Current into BATT
FB Input Current
PFI Trip Voltage
PFI Input Current
PFO Low Output Voltage
PFO Leakage Current
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Input Current
BATT
= V
and output voltage trip point).
PARAMETER
SHDN
= 1.3V, I
High-Efficiency, Step-Up DC-DC Converter
_______________________________________________________________________________________
LOAD
= 0, FB = GND, T
V
I
I
SYMBOL
SHDN,BATT
SHDN,OUT
BATT(MAX)
I
I
Q,BATT
V
V
Q,OUT
V
V
IL,PFI
V
V
OUT
K
OL
FB
IH
IL
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
V
External feedback
External feedback
V
V
0.9V < V
V
V
V
V
Falling PFI hysteresis 2%
V
V
V
SHDN = GND or BATT
FB
OUT
OUT
OUT
OUT
BATT
FB
PFI
PFI
PFI
< 0.1V
= 1.3V
= 650mV
= 0, V
= 650mV, V
1-Cell to 2-Cell, Low-Noise,
= 3.3V
= 3.3V
= 3.5V
= 3.5V
= 1V
BATT
OUT
< 3.3V (t
CONDITIONS
= 3.3V, I
PFO
= 6V
ON
SINK
= K / V
= 1mA
BATT
)
0.8 x V
3.12
1.17
5.60
MIN
580
2.0
BATT
0.2 x V
MAX
3.48
1.28
11.2
642
5.5
5.5
1.5
2.2
3.5
0.4
65
10
10
10
8
1
1
BATT
UNITS
V-µs
mV
µA
µA
µA
µA
nA
nA
µA
nA
Ω
Ω
V
V
V
V
V
V
V
3