Rainbow Electronics MAX1800 - Manual (Page 3)

MAX1800
Digital Camera Step-Up
Power Supply
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ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V OUT = V POUT = 3.3V, PGND = GND, V ONM = 3.3V, V ON1 = V ON2 = V ON3 = V ONA = 0, T A = -40°C to +85°C,
unless otherwise noted. Typical values are at T A = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LOGIC INPUTS (ONM, ON1, ON2, ON3, ONA)
1.1V < V OUT < 1.8V (ONM only) 0.2
Input Low Level V
IL
1.8V < V OUT < 5.5V 0.4
V
1.1V < V OUT < 1.8V (ONM only)
V OUT -
0.2 Input High Level V IH
1.8V < V OUT < 5.5V 1.6
V
Input Leakage Current V
IN
= 0 or V
IN
= V
OUT
= 5.5V 0.01 1 µA
MAIN DC/DC CONVERTER
Main Output Voltage Adjust
Range
V OUT 2.7 5.5 V
Main Undervoltage Lockout
Threshold (Note 3)
Rising edge 2.2 2.35 2.6 V
Main Output Maximum Duty
Cycle
Measured at LX output, V FBM = 1V 80 85 88 %
Idle-Mode™ Threshold V OSC = 0.625V 0.3 A
ERROR AMPLIFIER
FBM Regulation Voltage Unity gain configuration, FBM = COMPM 1.23 1.250 1.27 V
FBM to COMPM
Transconductance Unity gain configuration, FBM = COMPM,
-5
µA < I
LOAD < +5 µA
60 100 140 µS
FBM to COMPM Maximum
Voltage Gain
2000 V/V
FBM Input Leakage Current V FBM = 1.35V 0.01 100 nA
COMPM Minimum Output
Voltage
V FBM = 1.35V, COMPM open 0.1 V
COMPM Maximum Output
Voltage
V FBM = 1.15V, COMPM open 2.00 2.15 2.30 V
POWER SWITCHES
POUT Leakage Current V LX = 0, V POUT = 5.5V 0.1 20 µA
LX Leakage Current V
LX
= V
OUT
= 5.5V 0.1 20 µA
N-channel 100 180
Switch On- Resistance R ON
P-channel 200 350
m Ω
N-Channel Current Limit 2 A
P-Channel Turn-Off Current 40 120 190 mA
POWER READY
RDYM Trip Level V FBM rising edge, 1% typical hysteresis 1.09 1.125 1.16 V
RDYM Output High Leakage V RDYM = 5.5V 0.01 1 µA
RDYM Output Voltage Low I SINK = 1mA 0.4 V
Idle Mode is a trademark of Maxim Integrated Products.