参数资料
| 型号： | ISL9109IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1.5A 8DFN |
| 标准包装： | 6,000 |
| 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： | 1.6MHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（2x3） |
ISL9109
Absolute Maximum Ratings (Reference to GND)
Thermal Information
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
Thermal Resistance (Notes 1, 2)
θ JA (°C/W)
θ JC (°C/W)
EN, MODE, STBY . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN + 0.3V
SW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to 6.5V
FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V
Recommended Operating Conditions
2x3 DFN Package . . . . . . . . . . . . . . 55 5.5
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Load Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 1.5A
Ambient Temperature Range . . . . . . . . . . . . . . . . . . .-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. 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 specifications are measured at the following conditions: T A = +25°C, V IN = V EN = 3.6V, L = 2.2μH,
C 1 = 10μF, C 2 = 10μF, I OUT = 0A (see the“Typical Applications” on page 7).
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY
Undervoltage Lockout Threshold
Quiescent Supply Current
V UVLO
I VIN
Rising
Falling
EN = STBY = LOW (Shut Down)
-
2.2
-
2.5
2.4
0.05
2.7
-
2
V
V
μA
T A = +25°C
EN = STBY = HI for ≥ 1ms, then
-
4.3
6.0
μA
EN = LOW, STBY = HI (Standby)
T A = +25°C
EN = MODE = HI, no load at the output
EN = HI, MODE = LOW, no load at the output,
-
-
22
3.6
30
5.5
μA
mA
VFB = 0.75V
OUTPUT REGULATION
FB Regulation Voltage
FB Bias Current
Line Regulation
V FB
I FB
MODE = LOW
VFB = 0.75V
V IN = V O + 0.5V to 5.5V (minimal 2.7V)
0.78
-
-
0.8
0.1
0.2
0.82
-
-
V
μA
%/V
COMPENSATION
Error Amplifier Trans-conductance
Design info only
-
20
-
μA/V
SW
P-Channel MOSFET ON-resistance
N-Channel MOSFET ON-resistance
V IN = 3.6V, I O = 200mA
V IN = 2.7V, I O = 200mA
V IN = 3.6V, I O = 200mA
V IN = 2.7V, I O = 200mA
-
-
-
-
0.12
0.16
0.11
0.15
0.22
0.27
0.22
0.27
Ω
Ω
Ω
Ω
P-Channel MOSFET Peak Current Limit
Maximum Duty Cycle
I PK
V IN = 5.5V, L = 3.3μH, V OUT shorted to GND
thru a 50m Ω resistor
1.8
-
2.1
100
2.6
-
A
%
PWM Switching Frequency
SW Minimum On Time
f S
MODE = LOW (forced PWM mode)
1.35
-
1.6
80
1.75
-
MHz
ns
2
FN6681.1
September 29, 2008
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