MAX8559 datasheet(3/12 Pages) MAXIM

No de pièce	MAX8559

Description	Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN

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Dual, 300mA, Low-Noise Linear Regulator

with Independent Shutdown in UCSP or TDFN

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3

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 3.8V, SHDNA = SHDNB = IN_, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

TA = +25°C

10

100

SHDN Input Bias Current

ISHDN

SHDN_ = IN or

GND

TA = -40°C to +85°C

100

nA

VOUT_ Discharge Resistance in

Shutdown

SHDN_ = GND

385

Ω

THERMAL PROTECTION

Thermal-Shutdown Temperature

TSHDN

TJ rising

+160

°C

Thermal-Shutdown Hysteresis

∆TSHDN

10

°C

Note 1: All units are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: The dropout voltage is defined as VIN - VOUT when VOUT is 100mV below the nominal value of VOUT. Specification only

applies when VOUT ≥ 2.5V.

Typical Operating Characteristics

(VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for

300mA), unless otherwise noted.)

0

100

50

200

150

250

300

03

4

12

5

6

GROUND CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

100mA LOAD, BOTH OUTPUTS

NO LOAD, BOTH OUTPUTS

0

50

25

125

100

75

200

175

150

225

0

100

50

150

200

250

300

GROUND CURRENT

vs. LOAD CURRENT

LOAD CURRENT (mA)

BOTH OUTPUTS LOADED

0

75

50

25

100

125

150

175

200

225

250

-40

10

-15

35

60

85

GROUND CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

100mA LOAD, BOTH OUTPUTS

NO LOAD, BOTH OUTPUTS

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