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參數(shù)資料
| 型號(hào)： | ISL9105IRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator |
| 中文描述： | 1.3 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 2 X 3 MM, ROHS COMPLIANT, PLASTIC, DFN-8 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大?。?/td> | 582K |
| 代理商： | ISL9105IRZ-T |
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)
2x3 DFN Package . . . . . . . . . . . . . .
Junction Temperature Range. . . . . . . . . . . . . . . . . .-55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
θ
JA
(°C/W)
75
θ
JC
(°C/W)
6
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.
θ
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.
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: T
A
= +25°C, V
IN
= 3.6V, EN = V
IN
, RSI = MODE = 0V,
L = 3.3
μ
H, C1 = 10
μ
F, C2 = 10
μ
F, I
OUT
= 0A (see the Typical Application Circuit).
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY
VIN Under Voltage Lockout Threshold
V
UVLO
Rising
-
2.5
2.7
V
Falling
2.2
2.4
-
V
Quiescent Supply Current
I
VIN
MODE = V
IN
, no load at the output
-
25
50
μ
A
MODE = GND, no load at the output
-
5
8
mA
Shutdown Supply Current
I
SD
V
IN
= 5.5V, EN = low
-
0.1
2
μ
A
OUTPUT REGULATION
FB Regulation Voltage
V
FB
T
A
= 0°C to +85°C
0.784
0.8
0.816
V
T
A
= -40°C to +85°C
0.78
0.8
0.82
V
FB Bias Current
I
FB
FB = 0.75V
-
0.1
-
μ
A
Output Voltage Accuracy
V
IN
= V
O
+ 0.5V to 5.5V, I
O
= 0mA to 600mA
-3
-
3
%
Line Regulation
V
IN
= V
O
+ 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
-
μ
A/V
PHASE
P-Channel MOSFET On Resistance
V
IN
= 3.6V, I
O
= 200mA
-
0.16
0.22
Ω
N-Channel MOSFET On Resistance
V
IN
= 3.6V, I
O
= 200mA
-
0.14
0.22
Ω
P-Channel MOSFET Peak Current Limit
I
PK
0.75
1.0
1.3
A
PHASE Maximum Duty Cycle
-
100
-
%
PWM Switching Frequency
f
S
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 = V
IN
= 3.6V
-
0.01
0.1
μ
A
ISL9105
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