ncp1080 ON Semiconductor, ncp1080 Datasheet - Page 9

• Manufacturer Part Number: ncp1080
• Description: Integrated Poe-pd & Dc-dc Converter Controller
• Manufacturer: ON Semiconductor

10. Conditions
11. Conditions
Table 3. Operating Conditions
ERROR AMPLIFIER
SOFT−START
CURRENT LIMIT COMPARATOR
OSCILLATOR
CURRENT CONSUMPTION
THERMAL SHUTDOWN
THERMAL RATINGS
Vbg_fb
Av_ol
GBW
Vss
Vss_r
Iss
CSth
Tblank
DutyC
Frange
F_acc
IvportP
IvportP
TSD
Thyst
Ta
Tj
Symbol
a. No current through the pass−switch
b. DC−DC controller inactive (SS shorted to RTN)
d. VPORTP = 57 V
a. No current through the pass−switch
b. Oscillator frequency = 100 kHz
d. Aux winding not used
e. 2 nF on GATE, DC−DC controller enabled
c. No external load on VDDH and VDDL
c. No external load on VDDH and VDDL
f. VPORTP = 57 V
1
2
Reference voltage
DC open loop gain
Error amplifier GBW
Soft−start voltage range
Soft−start low threshold (rising edge)
Soft−start source current
CS threshold voltage
Blanking time
Maximum duty cycle
Oscillator frequency range
Oscillator frequency accuracy
VPORTP internal current consumption
(Note 10)
VPORTP internal current consumption
(Note 11)
Thermal shutdown threshold
Thermal hysteresis
Ambient temperature
Junction temperature
Parameter
http://onsemi.com
Min.
1.15
0.35
324
100
150
−40
−
1
−
3
−
−
−
−
−
−
9
Typ.
80%
1.15
0.45
360
100
±25
1.2
2.5
4.7
80
15
−
5
−
−
−
−
Max.
1.25
0.55
396
500
125
150
3.5
6.5
85
−
−
−
7
−
−
−
−
Units
°C Tj
°C Tj
MHz
kHz
mV
mA
mA
dB
mA
nS
°C
°C
°C
%
V
V
V
Voltage with respect to ARTN
For information only
For information only
For information only
Fixed internally
DC−DC controller off
DC−DC controller on
Tj = junction temperature
Tj = junction temperature
Parametric values guaranteed
Max 1000 hours
Conditions