Ambient Temperature Range, ISL8104C . . . . . . . . . . . 0°C to +70°C
Ambient Temperature Range, ISL8104I. . . . . . . . . . .-40°C to +85°C
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 high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
4. Limits should be considered typical and are not production tested.
Electrical Specifications
PARAMETER
V
CC
SUPPLY CURRENT
Shutdown Supply V
CC
Shutdown Supply V
PVCC
POWER-ON RESET
V
CC
/V
PVCC
Rising Threshold
V
CC
/V
PVCC
Hysteresis
TSOC Rising Threshold
TSOC Hysteresis
Enable - Rising Threshold
Enable - Hysteresis
REFERENCE
Reference Voltage
Recommended Operating Conditions, unless otherwise noted, specifications in
bold
are valid for process,
temperature, and line operating conditions.
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
VCC
I
PVCC
SS/EN = 0V
SS/EN = 0V
3.5
0.30
6.1
0.5
8.5
0.75
mA
mA
6.45
170
0.70
180
1.4
175
7.10
250
0.73
200
1.5
250
7.55
500
0.75
220
1.60
325
V
mV
V
mV
V
mV
T
J
= 0°C to +70°C
T
J
= -40°C to +85°C
0.591
0.588
-1.0
-1.5
-4
2.10
-3
0.597
0.597
-
-
-6
-
-
0.603
0.606
1.0
1.5
-8
3.50
3
V
V
%
%
µA
V
mV
System Accuracy
T
J
= 0°C to +70°C
T
J
= -40°C to +85°C
REFIN Current Source (QFN Only)
REFIN Threshold (QFN Only)
REFIN Offset (QFN Only)
FN9257 Rev 2.00
March 7, 2008
Page 4 of 14
ISL8104
Electrical Specifications
PARAMETER
OSCILLATOR
Trim Test Frequency
Total Variation (Note 4)
Ramp Amplitude
Ramp Bottom (Note 4)
ERROR AMPLIFIER
DC Gain (Note 4)
Gain-Bandwidth Product (Note 4)
Slew Rate (Note 4)
COMP Source Current (Note 4)
COMP Sink Current (Note 4)
GATE DRIVERS
Top-side Drive Source Current (Note 4)
Top-side Drive Source Impedance
Top-side Drive Sink Current (Note 4)
Top-side Drive Sink Impedance
Bottom-side Drive Source Current (Note 4)
Bottom-side Drive Source Impedance
Bottom-side Drive Sink Current (Note 4)
Bottom-side Drive Sink Impedance
PROTECTION
TSOC Current
I
TSOC
T
J
= 0°C to +70°C
T
J
= -40°C to +85°C
TSOC Measurement Offset (Note 4)
SOFT-START
Soft-start Current
SSDONE Low Output Voltage (QFN ONLY)
I
SS
I
SSDONE
= 2mA
22
-
30
-
38
0.30
A
V
OCP
OFFSET
TSOC = 1.5V to 15.4V
180
176
-
200
200
10
220
224
-
A
A
mV
I
T_SOURCE
V
BOOT
- V
LX
= 14V, 3nF Load
-
-
-
-
-
-
-
-
1.25
2.0
2
1.3
2
1.3
3
0.94
-
-
-
-
-
-
-
-
A
A
A
A
GBWP
SR
ICOMPSRC
ICOMPSNK
R
L
= 10k, C
L
= 100pF
R
L
= 10k, C
L
= 100pF
R
L
= 10k, C
L
= 100pF
-
-
-
-
-
88
15
6
2
2
-
-
-
-
-
dB
MHz
V/s
mA
mA
V
OSC
R
FSET
= OPEN V
VCC
= 12
8k < R
FSET
to GND < 200k
R
FSET
= OPEN
175
-
1.7
-
200
15
1.9
1
220
-
2.15
-
kHz
%
V
P-P
V
Recommended Operating Conditions, unless otherwise noted, specifications in
bold
are valid for process,
temperature, and line operating conditions.
(Continued)
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
R
T_SOURCE
90mA Source Current
I
T_SINK
R
T_SINK
I
B_SOURCE
V
BOOT
- V
LX
= 14V, 3nF Load
90mA Source Current
V
PVCC
= 14V, 3nF Load
R
B_SOURCE
90mA Source Current
I
B_SINK
R
B_SINK
V
PVCC
= 14V, 3nF Load
90mA Source Current
Functional Pin Description (QFN/SOIC)
SS (Pin 1/3)
Connect a capacitor from this pin to ground. This capacitor,
along with an internal 30µA current source, sets the soft-start
interval of the converter.
EN (Pin 4/6)
This pin is a TTL compatible input. Pull this pin below 0.8V to
disable the converter. In shutdown the soft-start pin is
discharged and the TGATE and BGATE pins are held low.
REFIN (QFN ONLY Pin 5)
Upon enable if REFIN is less than 2.2V, the external
reference pin is used as the control reference instead of the
internal 0.597V reference. An internal 6µA pull-up to 5V is
provided for disabling this functionality.
COMP (Pin 2/4) and FB (Pin 3/5)
COMP and FB are the available external pins of the error
amplifier. The FB pin is the inverting input of the error
amplifier and the COMP pin is the error amplifier output.
These pins are used to compensate the voltage-control
feedback loop of the converter.
GND (Pin 6/7)
Signal ground for the IC. All voltage levels are measured
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