MAX1678 Datasheet, PDF (3/12 Pages) Maxim Integrated Products – 1-Cell to 2-Cell, Low-Noise, High-Efficiency, Step-Up DC-DC Converter

1-Cell to 2-Cell, Low-Noise,
High-Efficiency, Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS
(V_BATT = V_SHDN = 1.3V, I_LOAD = 0, FB = GND, T_A = -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
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
SYMBOL
CONDITIONS
V_BATT(MAX)
V_OUT
V_FB < 0.1V
External feedback
V_FB
K
I_Q,OUT
I_Q,BATT
I_SHDN,OUT
I_SHDN,BATT
V_IL,PFI
V_OL
V_IL
V_IH
External feedback
V_OUT = 3.3V
V_OUT = 3.3V
0.9V < V_BATT < 3.3V (t_ON = K / V_BATT)
V_OUT = 3.5V
V_OUT = 3.5V
V_BATT = 1V
V_FB = 1.3V
Falling PFI hysteresis 2%
V_PFI = 650mV
V_PFI = 0, V_OUT = 3.3V, I_SINK = 1mA
V_PFI = 650mV, V_PFO = 6V
SHDN = GND or BATT
MIN
MAX UNITS
5.5
V
3.12
3.48
V
2.0
5.5
V
1.17
1.28
1.5
2.2
5.60
11.2
65
8
1
3.5
10
580
642
10
0.4
1
0.2 x V_BATT
0.8 x V_BATT
10
V
Ω
Ω
V-µs
µA
µA
µA
µA
nA
mV
nA
V
µA
V
V
nA
Note 2: Start-up is guaranteed by correlation to measurements of device parameters (i.e., switch on-resistance, on-time, off-time,
and output voltage trip point).
Note 3: Specifications to -40°C are guaranteed by design and not production tested.
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