NCP1081DER2G ON Semiconductor, NCP1081DER2G Datasheet - Page 8

• Manufacturer Part Number: NCP1081DER2G
• Description: IC CONV CTLR POE-PD 40W 20-TSSOP
• Manufacturer: ON Semiconductor
• Type: Power over Ethernet Switch (PoE)r

Specifications of NCP1081DER2G

• Applications: Remote Peripherals (Industrial Controls, Cameras, Data Access)
• Internal Switch(s): Yes
• Current Limit: 1.1A
• Voltage - Supply: 0 V ~ 57 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Output Voltage: 9 V
• Switching Frequency: 250 KHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Output Power: 40 W
• Input Voltage: 57V
• Supply Current: 510mA
• Digital Ic Case Style: TSSOP
• No. Of Pins: 20
• Duty Cycle (%): 80%
• Uvlo: 38V
• Frequency: 500kHz
• Svhc: No SVHC (20-Jun-2011)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. The current value corresponds to the PoE−PD input current (the current flowing in the external Rdet and the quiescent current of the device
Table 3. Operating Conditions
UVLO
PASS−SWITCH AND CURRENT LIMITS
INRUSH AND ILIM1 CURRENT LIMIT TRANSITION
Vuvlo_on
Vuvlo_off
Vhyst_int
Vuvlo_pr
Vhyst_ext
Uvlo_Filter
Ron
I_Rinrush1
I_Rinrush2
I_Rilim1
I_Rilim2
I_Rilim3
I_Rilim4
Vds_pgood
Vds_pgood_hyst
are included).
Symbol
Default turn on voltage (VportP rising)
Default turn off voltage (VportP falling)
UVLO internal hysteresis
UVLO external programming range
UVLO external hysteresis
UVLO on/off filter time
Pass−switch Rds−on
Rinrush = 150 kW (Note 9)
Rinrush = 57.6 kW (Note 9)
Rilim1 = 84.5 kW (Note 9)
Rilim1 = 66.5 kW (Note 9)
Rilim1 = 55.6 kW (Note 9)
Rilim1 = 38.3 kW (Note 9)
VDS required for power good status
VDS hysteresis required for power
good status
Parameter
http://onsemi.com
Min.
29.5
260
450
600
720
970
0.8
25
95
−
−
−
−
−
−
8
1100
Typ.
125
310
510
645
770
0.6
8.2
38
32
15
90
6
−
1
Max.
1230
155
360
570
690
820
1.2
1.2
40
50
−
−
−
−
−
Units
ohm
mA
mA
mA
mA
mA
mA
mS
%
V
V
V
V
V
V
UVLO pin tied to
VPORTN
UVLO pin tied to
VPORTN
UVLO pin tied to
VPORTN
UVLO pin connected to the
resistor divider (R1 & R2).
For information only
UVLO pin connected to the
resistor divider (R1 & R2)
For information only
Max Ron specified at
Tj = 130°C
Measured at RTN−
VPORTN
Measured at RTN−
VPORTN
Current limit threshold
Current limit threshold
Current limit threshold
Current limit threshold
RTN−VPORTN
Voltage with respect to
VPORTN
Voltage with respect to
VPORTN
Conditions
1,2
1,2
1,2
1,2
1,2
1,2
1,2
= 3 V
= 3 V
1,2
falling;