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| 型号： | ISL6273IRZ |
| 厂商： | Intersil |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC BUCK SYNC ADJ 1.2A 10DFN |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 包装： | * |
| 供应商设备封装： | * |
ISL6273
Absolute Maximum Ratings (Reference to SGND)
Thermal Information
Supply Voltage (PVIN, VCC) . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
Thermal Resistance (Notes 1, 2)
θ JA (°C/W)
θ JC (°C/W)
EN, RSI, MODE, PHASE, POR . . . . . . . . . . . . . -0.3V to VCC+0.3V
FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V
PGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V
Recommended Operating Conditions
3x3 DFN Package . . . . . . . . . . . . . . 44 5.5
Junction Temperature Range. . . . . . . . . . . . . . . . . . . -40°C to 125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
PVIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 1.2A
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to 85°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.
NOTES:
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 PVIN = V VCC = 3.6V, EN = VCC,
RSI = 0V, MODE = VCC, L = 1.8 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
VCC Undervoltage Lockout Threshold
Quiescent Supply Current
Shut Down Supply Current
V UVLO
I PVIN
I SD
Rising
Falling
MODE = VCC, no load at the output
MODE = SGND, no load at the output
VCC = PVIN = 5.5V, EN = low
-
2.2
-
-
-
2.5
2.4
25
5
0.1
2.7
-
50
8
2
V
V
μ A
mA
μ A
OUTPUT REGULATION
FB Regulation Voltage
FB Bias Current
Output Voltage Accuracy
V FB
I FB
T A = 0°C to 85°C
T A = -40°C to 85°C
FB = 0.75V
PVIN = V O + 0.5V to 5.5V, Io = 0 to 1.2A ,
0.784
0.78
-
-3
0.8
0.8
0.1
-
0.816
0.82
-
3
V
V
μ A
%
T A = -40°C to 85°C
Line Regulation
Maximum Output Current
PVIN = V O + 0.5V to 5.5V (minimal 2.7V)
-
1.2
0.2
-
-
-
%/V
A
COMPENSATION
Error Amplifier Trans-conductance
Adjustable version, design info only
-
20
-
μ A/V
PHASE
P-Channel MOSFET On Resistance
N-Channel MOSFET On Resistance
P-Channel MOSFET Peak Current Limit
PHASE Maximum Duty Cycle
I PK
PVIN = 3.6V, Io = 200mA
PVIN = 2.7V, Io = 200mA
PVIN = 3.6V, Io = 200mA
PVIN = 2.7V, Io = 200mA
-
-
-
-
1.5
-
0.12
0.16
0.11
0.15
2.1
100
0.22
0.27
0.22
0.27
2.6
-
Ω
Ω
Ω
Ω
A
%
PWM Switching Frequency
PHASE Minimum On Time
Soft Start-Up Time
f S
T A = -40°C to 85°C
MODE = low (forced PWM mode)
1.35
-
-
1.5
-
1.1
1.75
140
-
MHz
ns
ms
2
FN9256.0
March 7, 2006
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