Rainbow Electronics MAX1802 - Manual (Page 8)

MAX1802
Digital Camera Step-Down
Power Supply
8 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
FBC Input Leakage Current V FBC = 1.35V 100 nA
COMPC Minimum Output
Voltage
V FBC = 1.35V, COMPC open 0.3 V
COMPC Maximum Output
Voltage
V COMPC(MAX) V FBC = 1.15V, COMPC open 2.00 2.27 V
CORE POWER SWITCHES (V ONC = 3V)
LXC Leakage Current V LXC = 0, 5.5V 20 µA
R DSN N-channel, I LXC = 0.75A 350
Switch On-Resistance
R DSP P-channel, I LXC = 0.75A 400
m Ω
N-Channel Turn-Off Current 5 190 mA
AUXILIARY DC-DC CONTROLLERS 1, 2, 3 (V ON1 = V DCON _= 3V)
INTERNAL CLOCK
OSC Clock Low Trip Level OSC falling edge 0.2 0.3 V
V DCON _ = 0.625V 0.575 0.675 V
OSC Clock High Trip Level
V DCON _ = 1.25V to V VL 1.00 1.10
Maximum Duty Cycle
Adjustment Range
40 90 %
DCON_ Input Leakage Current V
DCON
_ = 0V to 3V 1 µA
DCON_ Input Sleep-Mode
Threshold
V DCON _ rising, 50mV hysteresis 0.35 0.45 V
AUXILIARY ERROR AMPLIFIER
FB_ Regulation Voltage Unity gain configuration, FB_ = COMP_ 1.230 1.265 V
FB_ to COMP_
Transconductance
G EA
Unity gain configuration, FB_ = COMP_,
-5µA < I
LOAD < 5µA
70 160 µs
FB_ Input Leakage Current V FB _ = 1.35V 100 nA
AUXILIARY DRIVERS (DL1, DL2, DL3)
DL_ Driver Resistance Output high or low 11 Ω
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V VDDM = 6V, V VDDC = 3V, PGNDM = PGND = GND, DCON1 = REF, V ONM = 3V, V ONC = V ON1 = V DCON2 =
V DCON3 = 0, T A = -40°C to +85°C, unless otherwise noted.) (Note 1)
Note 1: Specifications to -40 °C are guaranteed by design and not production tested.