LTC3526BEDC-2-PBF(RevA) View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC3526BEDC-2-PBF
(Rev.:RevA)

500mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN

Linear Technology 

LTC3526-2/LTC3526B-2

TYPICAL PERFORMANCE CHARACTERISTICS

VFB vs Temperature

0.50

NORMALIZED TO 25˚C

0.25

0

–0.25

–0.50

–0.75

–1.00

–60 –40 –20 0 20 40 60 80 100

TEMPERATURE (˚C)

35262b2f

Fixed Frequency Switching

Waveform and VOUT Ripple

Start-Up Voltage vs Temperature

1.00

LOAD = 1mA

0.95

0.90

0.85

0.80

0.75

0.70

–50 –30 –10 10 30 –50 70 90

TEMPERATURE (°C)

35262b2f G14

Burst Mode Waveforms

Burst Mode Quiescent Current

vs VOUT

10.0

9.5

9.0

8.5

8.0

7.5

7.0

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

VOUT (V)

35262b2f

VOUT and IIN During Soft-Start

SW PIN

2V/DIV

VOUT

10mV/DIV

AC COUPLED

VIN = 1.2V

200ns/DIV

VOUT = 3.3V AT 50mA

COUT = 4.7μF

SW PIN

2V/DIV

VOUT

50mV/DIV

AC COUPLED

35262b2f

VIN = 1.2V

20μs/DIV

VOUT = 3.3V AT 5mA

COUT = 10μF

VOUT

1V/DIV

35262b2

INPUT

CURRENT

0.2A/DIV

SHDN PIN

1V/DIV

VOUT = 3.3V

COUT = 10μF

200μs/DIV

35262b2f

Load Step Response (from Burst

Mode Operation)

VOUT

100mV/DIV

AC COUPLED

LOAD

CURRENT

50mA/DIV

VIN = 3.6V

100μs/DIV

VOUT = 5V

20mA TO 170mA STEP

COUT = 10μF

35262b2f

Load Step Response

(Fixed Frequency)

VOUT

100mV/DIV

AC COUPLED

LOAD

CURRENT

50mA/DIV

VIN = 3.6V

100μs/DIV

VOUT = 5V

50mA TO 150mA STEP

COUT = 10μF

35262b2f

35262b2fa

5

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