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ISL6549 Datasheet(PDF) 5 Page - Intersil Corporation

Part # ISL6549
Description  Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Controller
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL6549 Datasheet(HTML) 5 Page - Intersil Corporation

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5
FN9168.2
September 22, 2006
ISL6549
Sawtooth Amplitude (Note 6)
DVOSC
1.5
V
Soft-Start Interval
TSS
FOSC = 620kHz
6.8
ms
REFERENCE VOLTAGE
Reference Voltage
VREF
ISL6549C; For Error Amp 1 and 2
0.792
0.8
0.808
V
ISL6549I; For Error Amp 1 and 2
0.788
0.8
0.812
V
PWM CONTROLLER ERROR AMPLIFIER
DC Gain (Note 6)
RL = 10K, CL = 10pF
96
dB
Gain-Bandwidth Product (Note 6)
GBWP
RL = 10K, CL = 10pF
20
MHz
Slew Rate (Note 6)
SR
RL = 10K, CL = 10pF
8
V/µs
FB Input Current
⎜I
I
VFB = 0.8V
0.1
1.0
µA
COMP High Output Voltage
VOUT High
4.8
V
COMP Low Output Voltage
VOUT Low
0.6
V
COMP High Output, Source Current
IOUT High
-2.8
mA
Undervoltage Level (VFB/VREF)VUV
70
75
80
%
PWM CONTROLLER GATE DRIVERS
UGATE Maximum Voltage
VHUGATE
VCC12 = 12V; PHASE = 12V
17
17.5
18
LGATE Maximum Voltage
VHLGATE
VCC12 = 12V; based on PVCC5 voltage
5.25
6
V
UGATE and LGATE Minimum Voltage
VLGATE
VCC12 = 12V; PHASE = 0V
0
0.5
V
UGATE Source Output Impedance
RDS(ON)
VCC12 = 12V; IGATE = 100mA
0.8
UGATE Sink Output Impedance
RDS(ON)
VCC12 = 12V; IGATE = 100mA
0.7
LGATE Source Output Impedance
RDS(ON)
VCC12 = 12V; IGATE = 100mA
0.8
LGATE Sink Output Impedance
RDS(ON)
VCC12 = 12V; IGATE = 100mA
0.4
LINEAR REGULATOR (LDO_DR)
DC Gain (Note 6)
Gain
RL = 10K, CL = 10pF
100
dB
Gain-Bandwidth Product (Note 6)
GBWP
RL = 10K, CL = 10pF
2
MHz
Slew Rate (Note 6)
SR
RL = 10K, CL = 10pF
6
V
/µs
LDO_FB Input Current
⎜II
VLDO_FB = 0.8V
0.1
1.0
µA
LDO_DR High Output Voltage
VOUT High
VCC12 = 12V
11.0
11.5
V
LDO_DR Low Output Voltage
VOUT Low
0.0
0.5
V
LDO_DR High Output Source Current
IOUT High
VOUT = 2.0V
2.0
mA
LDO_DR Low Output Sink Current
IOUT Low
0.5
mA
Undervoltage Level (VLDO_FB/VREF)VUV
Percent of Nominal
70
75
80
%
NOTES:
4. Current in VCC5 is actually higher disabled, due to extra current required to pull down against the FS_DIS pin. VCC12 current is lower disabled.
5. Guaranteed by design, not production tested. Exceeding the maximum current from PVCC5 may result in degraded performance and unsafe
operation.
6. Guaranteed by design, not production tested.
Electrical Specifications
Recommended Operating Conditions, unless otherwise noted. VCC12 = 12V
Temperature = 0 to +70°C (typical = +25°C) for Commercial; Temperature = -40 to + 85°C (typical = +25°C) for
Industrial. Refer to Block Diagram, Simplified Power System Diagram, and Typical Application Schematic.
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS


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