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13 switching cycles after VOUT is within 10% of 1.2V voltage at start-up. 3V3 (Pin 39) 3.3V supply voltage for PGD_N logic, such an implementation will increase power consumption from 3.3V compared to open drain circuit other wise. PGOOD (Pin 40) Power Good open-drain output. Will be pulled up externally by a 1.9k? resistor to 3.3V. ISL9506 FN6722 Rev 0.00 Page

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2008 Absolute Maximum Ratings Thermal Information Supply Voltage, VDD 0.3 to +7V Battery Voltage, VIN.25V Open Drain Outputs, PGOOD, VRHOT#0.3 to +7V All Other Pins.0.3V to (VDD + 0.3V) Operating Conditions Temperature Range 10°C to +100°C Supply Voltage Range (Typical)5V ±5% Thermal Resistance (Notes 1, 2) ?JA (°C/W) ?JC (°C/W)

40 Ld QFN Package.30 5.5 Maximum Junction Temperature 150°C Storage Temperature 65°C to +150°C Pb-Free Reflow Profile.see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 1. ?JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 2. For ?JC, the case temp location is the center of the exposed metal pad on the package underside. 3. Limits established by characterization and are not production tested. Electrical Specifications Operating Conditions: VDD = 5V, TA = -10°C to +100°C, unless otherwise noted. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS INPUT POWER SUPPLY +5V Supply Current IVDD VR_EN = 3.3V 3.6 4.2 mA VR_EN = 0V

1 ?A +3.3V Supply Current I3V3 No load on PGD_N

1 ?A Battery Supply Current IVIN VR_EN = 0V

1 ?A VIN Input Resistance RVIN VR_EN = 3.3V

900 k? Power-On-Reset Threshold PORr VDD rising 4.35 4.5 V PORf VDD falling 4.00 4.15 V SYSTEM AND REFERENCES System Accuracy %Error (VOUT) No load;

closed loop, nominal mode range VSEL = 0.75V to 1.50V -0.5 +0.5 % VSEL = 0.5V to 0.7375V -8 +8 mV VSEL = 0.3 to 0.4875V -15 +15 mV VSTART 1.176 1.200 1.224 V Maximum Output Voltage VOUT(max) VSEL = [0000000] 1.500 V Minimum Output Voltage VOUT(min) VSEL = [1100000] 0.300 V VSEL Off State VSEL = [1111111] 0.0 V RBIAS Voltage RBIAS = 147k? 1.45 1.47 1.49 V CHANNEL FREQUENCY Nominal Channel Frequency fSW(nom) RFSET = 7k?,

3 channel operation, VCOMP = 2V

285 300

315 kHz Adjustment Range See Equation

6 RFSET selection

200 500 kHz AMPLIFIERS Droop Amplifier Offset -0.3 +0.3 mV Error Amp DC Gain Av0 (Note 3)

90 dB Error Amp Gain-Bandwidth Product GBW CL= 20pF (Note 3)

18 MHz FB Input Current IIN(FB)

10 150 nA ISL9506 FN6722 Rev 0.00 Page

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2008 ISEN Imbalance Voltage Maximum of ISENs - Minimum of ISENs

2 mV Input Bias Current

20 n........