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PTB48540 Series

10-W Power-Over-Ethernet Isolated

Power Module Assembly

PTB48540 SERIES

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

PTB48540A

(5 V)

—2

PTB48540B (3.3 V)

—3

A

PTB48540C ( 12 V)

—

0.85

Input Voltage Range

36

—

VDC

Set Point Voltage Tolerance

—

Temperature Variation

–40

—

±0.2

—

Line Regulation

—

±1

—

mV

Load Regulation

—

±5

—

mV

Total Output Voltage Variation

Includes set-point, line, load,

—

±1.5

±3

–40

Efficiency

η

PTB48540C (12 V)

—

85

—

PTB48540A

(5 V)

—

82

—

%

PTB48540B (3.3 V)

—

79

—

20 MHz bandwidth

—

50

—

Transient Response

—

100

—

µs

—

±150

—

mV

—

±200

—

Output Voltage Adjust

—

±10

—

Current Limit Threshold

—

150

—

Switching Frequency

200

300

400

kHz

Under-Voltage Lockout

UVLO

—

40

42

V

30

32

—

Output Inhibit (Pin 13)

Referenced to Input Ref (pin 4)

Input High Voltage

4.5

—

V

Input Low Voltage

–0.2

—

+0.8

Input Low Current

—–2

—mA

Standby Input Current

pins 13 & 4 connected

—

1

—

mA

External Output Capacitance

—

1000

µF

—

330

Internal Input Capacitance

0.05

0.1

0.12

µF

5

7

—

Detection Resistance

2.7 V

23.75

26.25

k

Ω

Classification Current

14.5 V

2

2.5

(6)

3mA

Operating Temperature Range

–40

—

°C

Over Temperature Protection

OTP

Measured at pin 7

Threshold

135

—

—

°C

Hysterisis

—

20

—

Isolation Voltage

Input–output

1500

—

—

V

Capacitance

—

1,100

—

pF

Resistance

10

——M

Ω

Solder Reflow Temperature

Surface temperature of module body or pins

—

—

°C

Storage Temperature

—

–40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

4

—

—

Mechanical Shock

—

Per Mil-Std-883D, method 2002.3,

—

500

—

G’s

1 mS, half-sine, mounted to a fixture

Mechanical Vibration

—

Mil-Std-883D, Method 2007.2

Pkg EUP

—

20

—

G’s

20-2000 Hz, soldered to PC

Pkg EUQ

—

7.5

—

Weight

—

—

—

12

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(1) The input voltage Vin is applied and measured between ‘Data Line A’ (pin 10) and ‘Data Line B’ (pin 9), or between ‘Spare Line A’ (pin 8) and ‘Spare

Line B (pin 7). These inputs accept either polarity.

(2) The DC/DC converter will operate at no load with reduced specifications.

(3) The Output Inhibit (pin 13) is referenced to ‘Input Ref ’ (pin 4) and has an internal pull-up. If it is left open circuit the converter will operate when

input power is applied. The open-circuit voltage is typically 5 V. Refer to the application notes for interface considerations.

(4) An output capacitor is not required for proper operation.

(5) This is the default for a “Valid Device” PD detection signature.

(6) This is the default for a “Class 0” PD classification signature.

(7) See Safe Operating Area curves or contact the factory for the appropriate derating.

(8) During the reflow of the SMD package version do not elevate the peak temperature of the module, pins, or internal components above the stated maximum.

SLTS224B – APRIL 2004 – REVISED JULY 2004

Not Recommended for New Designs