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PTB78560A ELECTRICAL CHARACTERISTICS

PTB78560A, PTB78560B

PTB78560C

SLTS249 – JUNE 2005

(Unless otherwise stated, T

PTB78560A

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

Output current

A

Input voltage range

18

24

60

V

Set-point voltage tolerance

Temperature variation

-40°C

≤ T

±0.5

Line regulation

±0.2

±1

Load regulation

±0.4

±1

Total output voltage variation

Includes set-point, line, load, –40°C

≤ T

±2

Adjust range

3.6

5.5

V

η

Efficiency

83%

20-MHz bandwidth

1

0.1 A/µs load step,

Recovery time

100

µs

Transient response

50% to 100%

±200

mV

Input current

Track connected to -Sense

–0.2

mA

Track input (pin 5)

Open-circuit voltage

0

2

V

Output enable inputs (pins 2, 3)

-0.2

0.8

–0.8

mA

Standby input current

Pins 2 and 3 open

8

16

mA

Overcurrent threshold

Shutdown, followed by autorecovery

9

A

17

UVLO

Undervoltage lockout

V

16

ƒ

S

Switching frequency

400

500

600

kHz

Internal input capacitance

1

µF

External input capacitance

100

µF

External output capacitance

220

5,000

µF

Isolation voltage

Input-output

1,500

Vdc

Isolation capacitance

Input-output

2,000

pF

Isolation resistance

Input-output

10

M

Ω

MTBF

Reliability

3.6

benign

(1)

The converter requires a minimum load current for proper operation. The converter is not damaged when operated under a no-load

condition.

(2)

See temperature derating curves for safe operating area (SOA), to determine output current derating at elevated ambient temperatures.

(3)

tolerance of 1%, with 100 ppm/°C temperature stability.

(4)

The PEN and NEN inputs each have an internal pullup resistor. If the enable feature is not used, the PEN input (pin 2) should be left

enable control. The open-circuit voltage is less than 10 V. See the Application Information for a more detailed description.

5

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