MAX1881 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1881

Quad-Output TFT LCD DC-DC Converters with Buffer

Maxim Integrated 

Quad-Output TFT LCD DC-DC

Converters with Buffer

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = +3.3V, SHDN = IN, VMAIN = VSUPP = VSUPN = VSUPB = VSUPL = 8V, BUF- = BUFOUT,

BUF+ = FLTSET = TGND = PGND = GND, TA = +25°C.)

LDO OUTPUT VOLTAGE

vs. LDO INPUT VOLTAGE

(INTERNAL LINEAR REGULATOR)

5.05

ILDOOUT = 0

5.00

4.95

ILDOOUT = 40mA

4.90

4.85

4.80

4.75

4

6

8

10

12

VSUPL (V)

LDO OUTPUT VOLTAGE

vs. LDO OUTPUT CURRENT

(INTERNAL LINEAR REGULATOR)

5.04

5.02

5.00

4.98

4.96

4.94

4.92

4.90

0.01

0.1

1

10

100

ILDOOUT (mA)

LDO OUTPUT VOLTAGE vs. TEMPERATURE

(INTERNAL LINEAR REGULATOR)

5.10

5.08

5.06

5.04

ILDOOUT = 0

5.02

5.00

4.98

ILDOOUT = 40mA

4.96

4.94

4.92

4.90

-40 -15

10

35

60

85

TEMPERATURE (°C)

DROPOUT VOLTAGE

vs. LDO LOAD CURRENT

(INTERNAL LINEAR REGULATOR)

200

VLDOOUT = 5V

160

120

80

40

0

0

10

20

30

40

ILDOOUT (mA)

LDO SUPPLY CURRENT

vs. LDO OUTPUT CURRENT

(INTERNAL LINEAR REGULATOR)

4.0

VLDOOUT = 5V

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

0

10

20

30

40

ILDOOUT (mA)

12 ______________________________________________________________________________________

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