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ISL9105 Datasheet(PDF) 2 Page - Intersil Corporation

Part No. ISL9105
Description  600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator
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Maker  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
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ISL9105 Datasheet(HTML) 2 Page - Intersil Corporation

 
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2
FN6415.1
February 13, 2007
Absolute Maximum Ratings (Reference to GND)
Thermal Information
Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
EN, RSI, MODE, POR . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN+0.3V
PHASE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to 6.5V
FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V
Recommended Operating Conditions
VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to 600mA
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Thermal Resistance (Typical, Notes 1, 2)
θJA (°C/W) θJC (°C/W)
2x3 DFN Package . . . . . . . . . . . . . .
75
6
Junction Temperature Range. . . . . . . . . . . . . . . . . . -55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . -65°C to +150°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
θJA 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.
2.
θ
JC, “case temperature” location is at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications
Unless otherwise noted, all parameter limits are guaranteed over the recommended operating conditions and the
typical specification are measured at the following conditions: TA = +25°C, VIN = 3.6V, EN = VIN, RSI = MODE = 0V,
L = 3.3
μH, C1 = 10μF, C2 = 10μF, IOUT = 0A (see the Typical Application Circuit).
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY
VIN Under Voltage Lockout Threshold
VUVLO
Rising
-
2.5
2.7
V
Falling
2.2
2.4
-
V
Quiescent Supply Current
IVIN
MODE = VIN, no load at the output
-
25
50
μA
MODE = GND, no load at the output
-
5
8
mA
Shutdown Supply Current
ISD
VIN = 5.5V, EN = low
-
0.1
2
μA
OUTPUT REGULATION
FB Regulation Voltage
VFB
TA = 0°C to +85°C
0.784
0.8
0.816
V
TA = -40°C to +85°C
0.78
0.8
0.82
V
FB Bias Current
IFB
FB = 0.75V
-
0.1
-
μA
Output Voltage Accuracy
VIN = VO + 0.5V to 5.5V, IO = 0mA to 600mA
-3
-
3
%
Line Regulation
VIN = VO + 0.5V to 5.5V (minimal 2.7V)
-
0.2
-
%/V
Maximum Output Current
600
-
-
mA
COMPENSATION
Error Amplifier Trans-Conductance
Design info only
-
20
-
μA/V
PHASE
P-Channel MOSFET On Resistance
VIN = 3.6V, IO = 200mA
-
0.16
0.22
Ω
N-Channel MOSFET On Resistance
VIN = 3.6V, IO = 200mA
-
0.14
0.22
Ω
P-Channel MOSFET Peak Current Limit
IPK
0.75
1.0
1.3
A
PHASE Maximum Duty Cycle
-
100
-
%
PWM Switching Frequency
fS
1.2
1.6
1.8
MHz
PHASE Minimum On Time
MODE = low (forced PWM mode)
-
-
140
ns
Soft-Start-Up Time
-1.1
-
ms
POR
Output Low Voltage
Sinking 1mA, FB = 0.7V
-
-
0.3
V
Delay Time
150
216
275
ms
POR Pin Leakage Current
POR = VIN = 3.6V
-
0.01
0.1
μA
ISL9105


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