ncp1083 ON Semiconductor, ncp1083 Datasheet - Page 9

• Manufacturer Part Number: ncp1083
• Description: Integrated High Power Poe-pd Interface & Dc-dc Converter Controller With 9v Auxiliary Supply Support
• Manufacturer: ON Semiconductor

11. The current value corresponds to the PoE−PD input current (the current flowing in the external Rdet and the quiescent current of the device
12. Power dissipation must be considered. Load on VDDH and VDDL must be limited especially if VDDH is not powered by an auxiliary winding.
13. Ivddl_load = current flowing out of the VDDL pin.
Table 3. Operating Conditions
PASS−SWITCH AND CURRENT LIMITS
INRUSH AND ILIM1 CURRENT LIMIT TRANSITION
VDDH REGULATOR
VDDL REGULATOR
GATE DRIVER
PWM COMPARATOR
ERROR AMPLIFIER
Ron
I_Rinrush1
I_Rinrush2
I_Rilim1
I_Rilim2
I_Rilim3
I_Rilim4
Vds_pgood
Vds_pgood_hyst
VDDH_reg
VDDH_Off
VDDH_lim
VDDH_Por_R
VDDH_Por_F
VDDH_ovlo
VDDL_reg
VDDL_Por_R
VDDL_Por_F
Gate_Tr
Gate_Tf
VCOMP
Vbg_fb
Av_ol
GBW
are included).
Ivddh_load = current flowing out of the VDDH pin + current delivered to the Gate Driver (function of the frequency, VDDH voltage & MOSFET
gate capacitance).
Symbol
Pass−switch Rds−on
Rinrush = 150 kW (Note 11)
Rinrush = 57.6 kW (Note 11)
Rilim1 = 84.5 kW (Note 11)
Rilim1 = 66.5 kW (Note 11)
Rilim1 = 55.6 kW (Note 11)
Rilim1 = 38.3 kW (Note 11)
VDS required for power good
status
VDS hysteresis required for power
good status
Regulator output voltage
(Notes 12 and 13)
Regulator turn−off voltage
VDDH regulator current limit
(Notes 12 and 13)
VDDH POR level (rising)
VDDH POR level (falling)
VDDH over−voltage level (rising)
Regulator output voltage
(Notes 12 and 13)
VDDL POR level (rising)
VDDL POR level (falling)
GATE rise time (10−90%)
GATE fall time (90−10%)
COMP control voltage range
Reference voltage
DC open loop gain
Error amplifier GBW
Parameter
http://onsemi.com
VDDL
− 0.2
Min.
3.05
1.15
260
450
600
720
970
0.8
8.4
7.3
2.5
1.3
95
13
16
−
−
6
−
−
−
1
VDDH_reg + 0.5 V
9
1100
Typ.
125
310
510
645
770
0.6
8.2
3.3
1.2
80
1
9
−
−
−
−
−
−
−
−
−
−
VDDL
− 0.02
Max.
1230
18.5
3.55
1.25
155
360
570
690
820
1.2
1.2
9.6
8.3
2.9
26
50
50
−
7
3
−
−
Units
MHz
mA
mA
mA
mA
mA
mA
mA
dB
ns
ns
W
V
V
V
V
V
V
V
V
V
V
V
V
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
with respect to VPORTN
Voltage with respect to VPORTN
Ivddh_load + Ivddl_load < 10 mA
with Ivddl_load < 2.25 mA and
12.5 V < VPORTP − ARTN < 57 V
For information only
Ivddl_load < 2.25 mA with
Ivddh_load + Ivddl_load < 10 mA and
12.5 V < VPORTP − ARTN < 57 V
Cload = 2 nF, VDDHreg = 9 V
Cload = 2 nF, VDDHreg = 9 V
For information only
Voltage with respect to ARTN
For information only
For information only
Conditions
1,2
falling; voltage
1,2
1,2
1,2
= 3 V
= 3 V
1,2