Rainbow Electronics MAX1885 - Manual (Page 5)

MAX1778/MAX1880–MAX1885
Quad-Output TFT LCD DC-DC
Converters with Buffer
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ELECTRICAL CHARACTERISTICS (continued)
(V IN = +3.0V, SHDN = IN, V SUPP = V SUPN = V SUPB = V SUPL = 10V, LDOOUT = FBL, BUF- = BUFOUT, BUF+ = FLTSET = TGND =
PGND = GND, C REF = 0.22µF, C BUF = 1µF, T A = 0°C to +85°C. Typical values are at T A = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
I BUFOUT = 0 4.99 5.01
I BUFOUT = ±5mA 4.97 5.03 V Output Voltage V BUFOUT BUF+ = GND
I BUFOUT = ±45mA 4.93 5.07
I BUFOUT = ±5mA -30 30
Input Offset Voltage V OS
V SUPB = 4.5V to 13V,
V CM = 1.2V to
(V SUPB –1.2V) I BUFOUT = ±45mA -70 70
mV
Output Voltage Swing High V OH I BUFOUT = -45mA, ∆V
OS = 1V 9 9.6 V
Output Voltage Swing Low V OL I BUFOUT = +45mA, ∆V
OS = 1V 0.4 1 V
Peak Buffer Output Current ±150 mA
BUF+ Dual Mode™ Threshold
Voltage
Falling edge, 20mV hysteresis (typ) 80 125 170 mV
REFERENCE
Reference Voltage V REF -2 µA < I
REF < 50µA 1.231 1.25 1.269 V
Reference Undervoltage
Threshold
0.9 1.05 1.2 V
LOGIC SIGNALS
SHDN Input Low Voltage 0.9 V
SHDN Input High Voltage 2.1 V
SHDN Input Current I SHDN 0.01 1 µA
FLTSET Input Voltage Range
0.67 x
V REF
0.85 x
V REF
V
FLTSET Threshold Voltage Rising edge, 25mV hysteresis (typ) 80 125 170 mV
FLTSET Input Current V FLTSET = 1V 0.1 50 nA
RDY Output Low Voltage I SINK = 2mA 0.25 0.5 V
RDY Output High Leakage V RDY = 13V 0.01 1 µA
Thermal Shutdown Rising temperature 160 °C
Dual Mode is a registered trademark of Maxim Integrated Products, Inc.