NCP51705
www.onsemi.com
7
ELECTRICAL CHARACTERISTICS (V
DD
=20 V, V
EESET
= 0 V and C
LOAD
= 1000 pF for typical values T
A
=25°C, for min/max values
T
J
=T
A
=−40°C to +125°C, unless otherwise specified.) (Notes 7, 8)
Symbol
Parameters Test Conditions Min. Typ. Max. Units
VDD Section
I
DD
Operating V
DD
Supply Current f
IN
= 100 kHz, VEESET = 5 V 12 18 mA
I
QDD1
Quiescent V
DD
Supply Current 1 V
IN+
= V
IN−
= 0 V, VEESET = 5 V 4.5 6.5 mA
I
QDD2
Quiescent V
DD
Supply Current 2 V
IN+
= 0 V, V
IN−
= 5 V 0.85 1 mA
I
UVSET
Source Current for UV Voltage Set V
UVSET
= 3 V 22 25 28
mA
V
DDUV+
V
DD
Supply Under−Voltage
Positive−going Threshold Voltage
V
UVSET
= 3 V 17 18 19 V
V
DDUV−
V
DD
Supply Under−Voltage
Negative−going Threshold Voltage
V
UVSET
= 3 V 16 17 18 V
V
DDHYS
V
DD
Supply UVLO Hysteresis Voltage V
DDUV+
− V
DDUV−
1 V
V
UVSET,MIN
UVSET pin short protection Threshold Voltage V
UVSET
rising 1.55 V
V
UVSET,HYS
UVSET pin short protection Hysteresis 0.2 V
5V Regulator Section
V
V5V
5 V Bias (Note 9)
T
A
= 25°C 4.9 5 5.1 V
Total Variation 4.75 5 5.25 V
V
V5V_Reg
5 V Line Regulation 10 V < V
DD
< 22 V, I
OUT
= 10 mA 50 mV
5 V Load Regulation 0.1 mA < I
OUT
< 10 mA 50 mV
I
5V_MAX
Maximum Output Current (Note 10) for external load 20 25 mA
VEE Regulator Section
I
VEESET
Input V
EESET
Bias Current 5
mA
V
VCH,MAX
Maximum V
CH
Output Voltage (Note 10) 10 V
Charge Pump Section
V
EE
Negative Bias Rail Voltage
V
EESET
= 5 V − 5.5 −5
−4.5
V
V
EESET
= open −3.8 −3.4 −3.0 V
V
EESET
= V
DD
−8 V
I
VEE,
MAX
Maximum Output Current of V
EE
C
FYL
= 0.47 mF, C
VEE
= 1.5 mF
C
LOAD
= 8.5 nF, VEESET = 5 V
50 mA
f
OSC
Oscillator Switching Frequency for Charge Pump 350 390 430 kHz
Desaturation Section
I
DESAT
DC Source Current V
DESAT
= 0 V 360 400 440
mA
V
TH,DESAT
Desaturation Protection Threshold Voltage 7 7.5 8 V
t
DEL,DESAT
Blanking Time after turn−on 350 500 650 ns
R
ON,DESAT
Active Pull Down Resistance 5 10
W
Thermal Shutdown Section
TSD
Thermal ShutDown Temperature (Note 10) 130 150 °C
TSD
_HYS
TSD Hysteresis (Note 10) 25 °C
7. Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
8. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at T
J
= T
A
= 25_C.
9. Exclude overshoot voltage at start−up.
10.This parameter, although guaranteed by design, is not tested in production.
