ISL8501 查看數據表（PDF） - Intersil

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ISL8501

Triple Output Controller with 1A Standard Buck PWM and Dual LDOs

Intersil 

ISL8501

Electrical Specifications

PARAMETER

Unless Otherwise Noted, All Parameter Limits are Guaranteed Over the Recommended Operating Conditions

and the Typical Specifications are Measured at the Following Conditions: TA = -40°C To +85°C (Note 7),

VIN = 6V to 25V, Unless Otherwise Noted. Typical Values are at TA = +25°C. (Continued)

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNITS

ENABLE SECTION

EN Threshold

Rising Edge

1.2

1.7

2.2

V

Hysteresis

350

mV

EN_LDOx Logic Input Threshold

Rising Edge

1.2

1.7

2.2

V

Hysteresis

400

mV

EN_LDOx Logic Input Current

-1

1

μA

FAULT PROTECTION

Thermal Shutdown Temperature

PWM UV Trip Level

PWM UVP Propagation Delay

TSD

THYS

VUV

Rising Threshold

Hysteresis

Referred to Nominal VOUT

150

°C

15

°C

65

70

75

%

360

ns

PWM OCP Threshold

(Note 4)

1.85 2.7 3.00

A

OCP Blanking Time

150

ns

POWER GOOD

PG_PWM Trip Level Referred to Nominal

VOUT

Falling Edge, 15mV Hysteresis

Rising Edge, 15mV Hysteresis

84

88

92

%

107 110 113

%

PG_PWM and PG_LDOx Propagation

Delay

160

ns

PG_PWM Low Voltage

ISINK = 4mA

0.3

V

PG_PWM Leakage Current

PG_LDOx Trip Level Referred to Nominal

VOUT

VPG_PWM = 5V, VFB_PWM = 600mV

Falling Edge, 15mV Hysteresis

-1

1

μA

81

85

88

%

PG_LDOx Low Voltage

ISINK = 4mA

0.3

V

PG_LDOx Leakage Current

SOFT-START SECTION

VPG_LDOx = 5V, VFB_LDOx = 600mV

-1

1

μA

Soft-Start Threshold to Enable Buck

0.8

1.0

1.2

V

Soft-Start Threshold to Enable PG

2.8 2.95 3.1

V

Soft-Start Voltage High

3.3

V

Soft-Start Charging Current

25

30

35

μA

Soft-Start Pull-down

POWER MOSFET

VSS = 3.0V

25

mA

rDS(ON)

LDOx

IOUT = 100mA

120 350 mΩ

FB_LDOx Voltage Accuracy

IOUT = 10mA

-1.5

1.5

%

FB Leakage Current

VFB = 0.6V

-200 -80

nA

Output Current Limit

550 800 1000 mA

Dropout Voltage

IOUT = 450mA, VOUT > 2V (Note 5)

150 300 mV

FB_LDOx Line Regulation

IOUT = 0mA, VIN_LDO1 = 2.0 ~4.6V

-0.6

0.6 %/V

FB_LDOx Load Regulation

IOUT = 10mA to 500mA

±0.5

%

NOTES:

3. Test Condition: VIN = 15V, FB forced above regulation point (0.6V), no switching, and power MOSFET gate charging current not included.

4. Limits established by characterization and are not production tested.

5. The dropout voltage is defined as minimum amount VIN must exceed a desired VOUT operating point. VLDO = VIN_LDO - VOUT.

6. The input voltage VCC must be higher than VIN_LDO or the LDO will not function.

7. Specifications at -40°C to +85°C are guaranteed by +25°C test with margin limits.

6

FN6500.1

July 12, 2007

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