PDF《ISL6722A, ISL6723A》

1000 hours (Note 5) - 5.00 - mV Fault Voltage 4.50 4.65 4.75 V VREF Good Voltage 4.65 4.8 4.95 V Hysteresis

75 165

250 mV Operational Current -10 - - mA Current Limit -20 - - mA CURRENT SENSE Input Impedance -

5 - k? 电气规范 ISL6722A, ISL6723A

6 Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block Diagram and Typical Application Schematic. 9V <

VCC = VC <

20V, RT = 11k?, CT = 330pF, TA = -40o C to 105o C (Note 3), Typical values are at TA= 25o C (Continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Offset Voltage 0.08 0.10 0.11 V Input Voltage Range

0 - 1.5 V Blanking Time (Note 5)

30 60

100 ns Gain, ACS VSLOPE = 0V, VFB = 2.3V, VISET = 0.35V, 1.5V ACS = ?ISET/?ISENSE 0.77 0.79 0.81 V/V ERROR AMPLIFIER Open Loop Voltage Gain (Note 5)

60 90 - dB Gain-Bandwidth Product (Note 5) -

15 - MHz Reference Voltage Initial Accuracy VFB = COMP, TA = 25°C (Note 5) 2.465 2.515 2.565 V Reference Voltage VFB = COMP 2.44 2.515 2.590 V COMP to PWM Gain, ACOMP COMP = 4V, TA = 25°C 0.31 0.33 0.35 V/V COMP to PWM Offset COMP = 4V 0.51 0.75 0.88 V FB Input Bias Current VFB = 0V -2 0.1

2 ?A COMP Sink Current COMP = 1.5V, VFB = 2.7V

2 6 - mA COMP Source Current COMP = 1.5V, VFB = 2.3V -0.25 -0.5 - mA COMP VOH VFB = 2.3V 4.25 4.4 5.0 V COMP VOL VFB = 2.7V 0.4 0.8 1.2 V PSRR Frequency = 120Hz (Note 5)

60 80 - dB SS Clamp, VCOMP SS = 2.5V, VFB = 0V, ISET = 2V 2.4 2.5 2.6 V OSCILLATOR Frequency Accuracy

289 318

347 kHz Frequency Variation with VCC TA = 105°C (F20V - F9V)/F9V -

2 3 TA = -40°C (F20V - F9V)/F9V

2 3 % Temperature Stability (Note 5) -

8 - % Maximum Duty Cycle (Note 6)

68 75

81 % Comparator High Threshold - 3.00 - V Comparator High Threshold w/Ext. SYNC (ISL6723A) (Note 5) - 4.00 - V Comparator Low Threshold - 1.50 - V TA =

0 - 105°C 0.75

1 1.2 Discharge Current TA = -40 - 105°C 0.70

1 1.2 mA SOFTSTART Charging Current SS = 2V -40 -55 -70 ?A Charged Threshold Voltage 4.26 4.5 4.74 V Initial Overcurrent Discharge Current Sustained OC Threshold <

SS <

Charged Threshold

30 40

55 ?A 电气规范 ISL6722A, ISL6723A

7 Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block Diagram and Typical Application Schematic. 9V <

VCC = VC <

20V, RT = 11k?, CT = 330pF, TA = -40o C to 105o C (Note 3), Typical values are at TA= 25o C (Continued) Overcurrent Shutdown Threshold Voltage Charged Threshold minus, TA = 25°C 0.110 0.125 0.140 V Fault Discharge Current SS = 2V 0.25 1.0 - mA Reset Threshold Voltage TA = 25°C 0.22 0.27 0.31 V SLOPE COMPENSATION SLOPE = 2V, TA=

0 - 105°C -45 -53 -65 ?A Charge Current TA = -40 - 105°C -41 -53 -65 ?A Slope Compensation Gain Fraction of slope voltage added to ISENSE, TA = 25°C 0.1 0.103 0.107 V/V Discharge Voltage VRTCT = 4.5V - 0.1 0.2 V GATE OUTPUT Gate Output Limit Voltage VC = 20V, CGATE = 1nF, IOUT = 0mA 11.0 13.5 16.0 V Gate VOH VC - GATE, VC = 10V, IOUT = 150mA - 1.5 2.2 V GATE - PGND, IOUT = 150mA 1.2 1.5 Gate VOL IOUT = 10mA 0.6 0.8 V Peak Output Current VC = 20V, CGATE = 1nF (Note 5) -

1 - A Output Faulted Leakage VC = 20V, UV = 0V, GATE = 2V 1.2 2.6 - mA Rise Time VC = 20V, CGATE = 1nF 1V <

GATE <

9V -

60 100 ns Fall Time VC = 20V, CGATE = 1nF 1V <

GATE <

9V -

15 40 ns Minimum ON time ISET = 0.5V;

VFB = 0V;

VC = 11V ISENSE to GATE w/10:1 Divider RTCT = 4.75V through 1k? (Note 5) - -

110 ns OVERCURRENT PROTECTION Minimum ISET Voltage - - 0.35 V Maximum ISET Voltage 1.2 - - V ISET Bias Current VISET = 1.00V -1 -