MAX8840ELT25T View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX8840ELT25T

Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN

Maxim Integrated 

MAX8840/MAX8841/MAX8842

Ultra-Low-Noise, High PSRR, Low-Dropout,

150mA Linear Regulators in µDFN

Typical Operating Characteristics (continued)

(VIN = VOUT + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 10nF, TA = +25°C, unless otherwise noted.)

MAX8840

OUTPUT NOISE vs. BP CAPACITANCE

25

MAX8840

LOAD-TRANSIENT RESPONSE

MAX8840 toc14

MAX8840

LOAD-TRANSIENT RESPONSE NEAR DROPOUT

MAX8840 toc15

20

VIN = 3.5V

VIN = 3.1V

ILOAD = 0 TO 50mA

ILOAD = 0 TO 50mA

15

10

VOUT

VOUT

10mV/div

10mV/div

5

0

1

10

100

BP CAPACITANCE (nF)

MAX8840

LINE-TRANSIENT RESPONSE

MAX8840 toc16

VIN = 3.5V TO 4V

1ms/div

1ms/div

MAX8840

EXITING SHUTDOWN WAVEFORM

MAX8840 toc17

VOUT = 2.85V

RLOAD = 47Ω

SHUTDOWN

VOLTAGE

MAX8840

ENTERING SHUTDOWN DELAY

MAX8840 toc18

CBP = 0.01μF

SHUTDOWN

VOLTAGE

VOUT

2mV/div

OUTPUT

VOLTAGE

2V/div

200μs/div

20μs/div

MAX8840

SHUTDOWN EXIT DELAY

MAX8840 toc19

VOUT = 3V

CBP = 100nF

VOUT

1V/div

Maxim Integrated

20μs/div

SHUTDOWN

VOLTAGE

40μs/div

MAX8840

REGION OF STABLE COUT ESR

vs. LOAD CURRENT

100

10

1

0.1

0.01

0

25 50 75 100 125 150

LOAD CURRENT (mA)

OUTPUT

VOLTAGE

2V/div

5

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