MAX1778 查看數據表（PDF） - Maxim Integrated

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MAX1778

Quad-Output TFT LCD DC-DC Converters with Buffer

Maxim Integrated 

Quad-Output TFT LCD DC-DC

Converters with Buffer

ELECTRICAL CHARACTERISTICS (continued)

(VIN = +3.0V, SHDN = IN, VSUPP = VSUPN = VSUPB = VSUPL = 10V, LDOOUT = FBL, BUF- = BUFOUT, BUF+ = FLTSET = TGND =

PGND = GND, CREF = 0.22µF, CBUF = 1µF, TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

PARAMETER

Input Bias Current

Input Offset Current

Output Voltage

Input Offset Voltage

Output Voltage Swing High

Output Voltage Swing Low

BUF+ Dual Mode

Threshold Voltage

REFERENCE

Reference Voltage

Reference Undervoltage

Threshold

LOGIC SIGNALS

SHDN Input Low Voltage

SHDN Input High Voltage

SHDN Input Current

FLTSET Input Voltage Range

FLTSET Threshold Voltage

FLTSET Input Current

RDY Output Low Voltage

RDY Output High Leakage

SYMBOL

IBIAS

IOS

VBUFOUT

VOS

VOH

VOL

VREF

I SHDN

VCM = 5V

VCM = 5V

BUF+ = GND

CONDITIONS

IBUFOUT = 0

IBUFOUT = ±5mA

IBUFOUT = ±45mA

VSUPB = 4.5V to 13V

VCM = 1.2V to

(VSUPB - 1.2V)

IBUFOUT = ±5mA

IBUFOUT = ±45mA

IBUFOUT = -45mA, ∆VOS = 1V

IBUFOUT = +45mA, ∆VOS = 1V

Falling edge, 20mV hysteresis (typ)

-2µA < IREF < 50µA

Rising edge, 25mV hysteresis (typ)

VFLTSET = 1V

ISINK = 2mA

V RDY = 13V

MIN

-500

-500

4.988

4.97

4.93

-30

-70

9

80

MAX

+500

+500

5.012

5.03

5.07

UNITS

nA

nA

V

30

mV

70

V

1

V

170

mV

1.223

0.9

1.269

V

1.2

V

0.9

V

2.1

V

1

µA

0.74 x VREF 0.85 x VREF V

80

170

mV

50

nA

0.5

V

1

µA

Note 1: Dropout Voltage is defined as the VSUPL - VLDOOUT, when VSUPL is 100mV below the set value of VLDOOUT.

Note 2: Specifications to -40°C are guaranteed by design, not production tested.

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