Rainbow Electronics MAX1804 - Manual (Page 3)

MAX1804
External Four-Input Feedback Integrator for
Power Supplies
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ELECTRICAL CHARACTERISTICS (continued)
(T A = 0 °C to +85°C, V
V + = 3.3V, V ADJ = 1.2V, V OUT = 2V, C V + = 0.1µF, C COMP = 470pF. Typical values are at T A = 25 °C, unless oth-
erwise noted.)
PARAMETER CONDITIONS MIN TYP MAX U N IT S
SHDN INPUT
Logic Input Voltage High V V+ = 2.7V to 5.5V 2.0 V
Logic Input Voltage Low V V+ = 2.7V to 5.5V 0.6 V
Logic Input Current -1 1 µA
ELECTRICAL CHARACTERISTICS
(T A = -40 °C to +85°C, V
V + = 3.3V, V ADJ = 1.2V, V OUT = 2V, C V + = 0.1µF, C COMP = 470pF.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX U N IT S
Supply Voltage Range (V+) 2.7 5.5 V
Shutdown Supply Current (V+) SHDN = GND 1 µA
Quiescent Supply Current (V+) SHDN = V+ 35 µA
UVLO Threshold, Rising 2.6 V
UVLO Threshold, Falling 2.3 V
INTEGRATOR INPUTS IN1–IN4
IN_ Voltage Range 0 5.5 V
IN_ Offset V V+ = 2.7V to 5.5V -20 20 mV
IN_ Scale Factor V ADJ = 0.7V to 1.4V 3.98 4.02 V/V
IN_ Transconductance V IN_ = 4.75V to 4.85V, V COMP = 1.3V 12 60 µS
IN_ Bias Current V IN_ = 4.8V 2.7 µA
IN_ Shutdown Current SHDN = GND 0.2 µA
IN_ Leakage Current V V+ = 0, V SHDN = 0 0.2 µA
IN_ Disable Threshold V ADJ = 0.7V to 1.4V, V ADJ x 4, falling edge 87 93 %
ADJ INPUT
ADJ Voltage Range 0.7 1.4 V
ADJ Bias Current -30 30 nA
ADJ Shutdown Current SHDN = GND 0.2 µA
ADJ Leakage Current V V+ = 0, V SHDN = 0 0.2 µA
COMP OUTPUT
COMP Source Current V COMP = 1.3V, V IN_ = 4.6V 1.6 2.4 µA
COMP Sink Current V COMP = 1.3V, V IN_ = 5.0V 1.6 2.4 µA
COMP Output Voltage Low Sink 1 µA, V
IN_ = 5.0V 0.2 V
COMP Output Voltage High Source 1 µA, V
IN_ = 0.6V 2.4 V
OUT Output Voltage Low I OUT = 10 µA, V
IN_ = 4.6V 0.2 V
V SHDN = 0 0.1
V
V+
= 0 0.1 OUT Output Leakage Current
V IN = 5.0V 0.1
µA
OUT Transconductance V COMP = 1V to 2V 3 23 µS