RT9800

  • IEEE802.3af compliant
  • Input voltage range 36V to 57V
  • Integral high efficiency DC/DC converter.
  • Low output ripple and noise
  • High performance with low price
  • Short-circuit protection
  • Adjustable Output
  • Optional multi-voltage output 3.3V 5V 12V 24V
  • Transformer isolation ,1500V isolation (input to output)
  • Easy to use, with a minimum number of external components.
  • Rohs compliant

相关产品

 
 

RT9800

 12W POE PD Module ( Isolation Model)

Product Description

Version

Date

Author

Approved By

Remarks

V4.3

2014/12/01

LI xiao yan

Rock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

© 2012 Shenzhen Ring&tone  Electronic Technology Co., Ltd. All rights reserved.

This document contains proprietary information of ring&tone and is not to be disclosed or used without the prior written permission of ring&tone.

Due to update and improvement of ring&tone products and technologies, information in this document is subjected to change without notice.

Features

  • IEEE802.3af compliant
  • Input voltage range 36V to 57V
  • Integral high efficiency DC/DC converter.
  • Low output ripple and noise
  • High performance with low price
  • Short-circuit protection
  • Adjustable Output
  • Optional multi-voltage output 3.3V 5V 12V 24V
  • Transformer isolation ,1500V isolation (input to output)
  • Easy to use, with a minimum number of external components.
  • Rohs compliant

Applications

  • IP Cameras
  • Wireless access point
  • Security and alarm systems
  • VOIP telephone
  • Point of sale network terminal equipment 

Description

The RT9800 series of modules are designed to extract power from a conventional twisted pair Category 5 Ethernet cable, conforming to the IEEE 802.3af Power-over-Ethernet(PoE) standard.

The RT9800 signature and control circuit provides the PoE compatibility signature and

power classification required by the Power Sourcing Equipment (PSE) before applying up

to 15W power to the port. The RT9800  provides a Class 0 signature.

The DC/DC converter operates over a wide input voltage range and provides a regulated

output. The DC/DC converter also has built-in short-circuit output protection.

  • RT9800 Product Selector

 

Part Number

Nominal Output Voltage

Output current

 

Marking

Package

RT9803 M

3.3V

2A

 

3.3V

SMD

RT9805 M

5V

2A

 

5V

SMD

RT9812 M

12V

1A

 

12V

SMD

RT9824 M

24V

0.5A

 

24V

SMD

RT9803 DIP

3.3V

2A

 

3.3V

DIP

RT9805 DIP

5V

2A

 

5V

DIP

RT9812 DIP

12V

1A

 

12V

DIP

RT9824 DIP

24V

0.5A

 

24V

DIP

*At 25°C with VIN = 48V

** Maximum Output Power: means it not could be operated in continuous stage .only short-term of Boot up/Heavy loading

  • Absolute Maximum Ratings

 

Parameter

Symbol

Min

Max

Units

1

DC Supply Voltage

VCC

-0.3

60

V

2

DC Supply Voltage Surge for 1ms

VSURGE

-0.6

80

V

3

Storage Temperature

TS

-40

100

OC

Note 1: Exceeding the above ratings may cause permanent damage to the product. Functional operation under these conditions is not implied. Maximum ratings assume free airflow.

  • Recommended Operating Conditions

 

Parameter

Symbol

Min

Typ

Max

Units

1

Input Supply Voltage1

VIN

36

48

57

V

2

Under Voltage Lockout

VLOCK

30

 

36

V

3

Operating Temperature2

TOP

-20

25

70

Ta / OC

 

 

 

 

 

 

 

Note 1: With minimum load

     2: See Section Operating Temperature Range

      ** Extended use close to, or at the maximum operating temperature can reduce the life time of the device.

  

  • RT9800 Pin Description:

Pin #

Name

Description

1

+VDC

DC Output This pin provides the regulated output from the DC/DC converter.

2

3

-VDC

DC Return This pin is the return path for the +VDC output.

4

ADJ

Output Adjust The output voltage can be adjusted from its nominal value, by connecting an external resistor from this pin to either the +VDC pin or the - VDC pin.

5

VIN+

Direct Input + This pin connects to the positive (+) output of the input bridge rectifiers.

6

7

VIN-

Direct Input - This pin connects to the negative (-) output of the input bridge rectifiers.

8

 

  • DC Electrical Characteristics

 

 

DC Characteristic

Sym

Min

Typ1

Max

Units

Test Comments

1

 

Nominal Output Voltage

+VDC

 3.1
4.75
11.5
23.5

3.3
 5.0
12.0
24.0

3.5
5.25
12.5
24.5

V
V
V
V

 RT9800-3.3V
 RT9800-5V
 RT9800-12V
 RT9800-24V

2

 

Output Current (VIN = 48V)

PWR

 

 

  2
  2
1.0
0.5

A
A
A
A

RT9800-3.3V
 RT9800-5V
 RT9800-12V
 RT9800-24V

3

 

Line Regulation

VLINE

 

0.1

 

%

@ 50% Load

4

 

Load Regulation

VLOAD

 

1

 

%

@ VIN=48V

5

 

Output Ripple and Noise

VRN

 

100

 

mVp-p

@ Max load2

6

 

Minimum Load

RLOAD

200
200
100
 50

 

 

mA
mA
mA
MA

 RT9800-3.3V
 RT9800-5V
 RT9800-12V
 RT9800-24V

7

 

Short-Circuit Duration3

TSC

 

 

sec

 

8

 

Efficiency @ 80% Load

EFF

 

79
84
87
87

 

%
%
%
%

 RT9800-3.3V
 RT9800-5V
 RT9800-12V
 RT9800-24V

9

 

Isolation Voltage (I/O)

VISO

 

1500

 

VPK

Impulse Test

10

 

Temperature Coefficient

TC

 

0.02

 

%

Per OC

Note 1: Typical figures are at 25°C with a nominal 48V supply and are for design aid only. Not Guaranteed

     2: The output ripple and noise can be reduced with an external filter, see application note.

     3: Continuous short circuit duration is applicable at 25'C ambient temperature in free air. At higher temperatures or with restricted airflow (e.g. in a sealed enclosure) the duration will need to be limited to avoid overheating.

  • RT9800 Typical Connection Diagram:
  • Reducing the output voltage, connect R2 between ADJ and +VDC

     

    R2 Value

    output voltage

    R2 Value

    output voltage

     RT9800-3.3V

    open

    3.3V

    0R

    2.8V

     RT9800-5V

    open

    5V

    0R

    4.4V

     RT9800-12V

    open

    12V

    0R

    9.9V

     RT9800-24V

    open

    24V

    30K

    18.2V

     

     

     

     

     

    Increasing the output voltage, connect R1 between ADJ and -VDC

     

    R1 Value

    output voltage

    R1 Value

    output voltage

     RT9800-3.3V

    open

    3.3V

    0R

    3.7V

     RT9800-5V

    open

    5V

    0R

    5.7V

     RT9800-12V

    open

    12V

    0R

    12.8V

     RT9800-24V

    open

    24V

    0R

    25.5V

    • Reliability MTBF:

    About the life time ,we design according to the following:

    1)  life time of RT9800  : 100,000 hours @ 25°C

    • Safety test items & test report

    Test Requested

    Test result

    Electric strength -1500Vrms at 50 to 60Hz for 60s, applied as specified in subclasuse 5.2.2 of IEC 60950

    Pass

    • Operating temp profile
      • Mechanical / Environmental Performance data
    • Mechanical / Environmental Performance data

       

      Item

      Requirement and Standard

      1

      Resistance to Wave Soldering Heat

      max Preheat Temp range & time 120 ℃ / 180S
      max soldering temp &time:265 ℃ / 4S

      2

      Solder ability

      Solder able area shall have minimum of 95% solder coverage.
      And then into solder bath,Temperature at 245 ±5 ℃   , for 4-5sec.

      3

      Hand Soldering Temperature Resistance

      T  > =350 ℃   , 3sec at least.

      4

      Thermal Shock

      subject to follow condition for 5 cycles.1 cycles:
      -55 ℃    , 30 minutes
      +85 ℃    , 30 minutes

      5

      Humidity(Temp Cycling)

      less than 95% (non-condensing) ( -20 to 70 ℃)

      6

      Temperature Life

      temperature life at 85℃     for 96 hours.

      7

      Salt Spray

      connectors to 5% salt-solution concentration, 35 ℃
      Gold flash for 8 hours there will be no change in the gold layer

       

      RT9800DIP Package(mm )                            RT9800M Package(mm )

    • RT9800_POE PD_SPEC_V1_0(1)
    •  

         

      • Packaging type & Quantity
    • EPE or BLASTIC Packaging,  

      50pcs/ dish    

      500pcs/box    Box size 30*35*20cm  6.7KG/box

    • RT9800 RoHs certification