ISL6720A_14 Datasheet, PDF (6/11 Pages) Intersil Corporation – 100V Triple Linear Bias Supply

ISL6720A
Electrical Specifications
Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” on page 2
and “Typical Application” on page 3. 17 V < VPWR < 100V, C_VSW = C_VCONT = 1µF, I_VCONT = -250μA,
I_VSW = -500μA, VSW Enabled, T_A = -40°C to +105°C (Note 4), Typical values are at T_A = +25°C (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Source Voltage Headroom VIO - VCONT
Minimum Required Load
VPWR = 48V, VADJ = 0V
VIO biased ext.
I_VCONT = 0.95 x I_VIO + 0.05 x I_VPWR
I_VCONT = -25mA, minimum
I_VCONT = -5mA, minimum
3.4
5.0
V
3.1
4.5
V
-250
μA
Long Term Stability
T_A = +125°C, 1000 hours, (Note 5)
0.2
%
VPWR = 100V, VADJ = 0V
VSW Disabled, I_VCONT = -25mA
Operational Current (source)
VPWR = 17V, VADJ = 0V
-25
mA
VSW Disabled
Current Limit
VPWR = 17V, 100V, VADJ = 0V
VIO = 0V, 40V ext., VSW Disabled
-30
-95
-150
mA
Output Capacitance
(Note 5)
0.47
1.0
1.5
μF
Compensation Capacitance
(Note 5)
800
1000
1200
pF
ENABLE
High Level Input Voltage (VIH)
Low Level Input Voltage (VIL)
Hysteresis
Pull-Up Resistance
Turn-On Delay
Turn-Off Delay
POR
% of VCONT
VPWR = 48V, VSWADJ = 2.14V
VADJ = 20V, I_VIO = 0mA
% of VCONT
VPWR = 48V, VSWADJ = 2.14V
VADJ = 20V, I_VIO = 0mA
% of VCONT
VPWR = 48V, VSWADJ = 2.14V
VADJ = 20V, I_VIO = 0mA
V_ENABLE = 0V
t_VSW, 10% to t_ENABLE, 60%
t_VSW, 90% to t_ENABLE, 40%
54
60
66
%
34
40
46
%
16
20
24
%
100
kΩ
5
50
μs
1
15
μs
Turn-On Delay
POR Threshold, VCONT increasing
t_VCONT,10% to t_VPWR > UVLO,
I_VCONT = 0μA
% of VCONT
150
500
μs
70
89
98
%
POR Hysteresis
200
mV
THERMAL PROTECTION
Thermal Shutdown 1, VSW off, VIO off
140
°C
Thermal Shutdown 1 Clear
95
°C
Hysteresis 1, Internal Protection
45
°C
Thermal Shutdown 2, VCONT off
150
°C
Thermal Shutdown 2 Clear
105
°C
Hysteresis 2, Internal Protection
45
°C
NOTES:
4. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.
5. Limits established by characterization and are not production tested.
6. The maximum load capacitance is limited only by practical considerations. Large values of capacitance combined with high supply voltage
(VPWR) may activate the thermal protection prior to reaching steady state operation.
6
FN6487.1
August 23, 2007