参数资料
型号: MIC2168YMM TR
厂商: Micrel Inc
文件页数: 2/14页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 10-MSOP
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 1.1MHz
占空比: 90%
电源电压: 3 V ~ 14.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
其它名称: MIC2168YMMTR
MIC2168YMMTR-ND
MIC2168
Ordering Information
Micrel, Inc.
Standard
Part Number
Pb-Free
Frequency
Junction Temp. Range
Package
MIC2168BMM
MIC2168YMM
1MHz
-40°C to +125°C
10-Lead MSOP
Pin Con?guration
Pin Description
VIN 1
VDD 2
CS 3
COMP/EN 4
FB 5
10-Pin MSOP (MM)
10 BST
9 HSD
8 VSW
7 LSD
6 GND
Pin Number
1
2
3
4
5
6
7
8
9
10
Pin Name
VIN
VDD
CS
COMP/EN
FB
GND
LSD
VSW
HSD
BST
Pin Function
Supply Voltage (Input): 3V to 14.5V.
5V Internal Linear Regulator (Output): V DD is the external MOSFET gate
drive supply voltage and an internal supply bus for the IC. When V IN is <5V,
this regulator operates in dropout mode.
Current Sense / Enable (Input): Current-limit comparator noninverting input.
The current limit is sensed across the MOSFET during the ON time. The cur-
rent can be set by the resistor in series with the CS pin.
Compensation (Input): Dual function pin. Pin for external compensation.
If this pin is pulled below 0.2V, with the reference fully up the device shuts
down (50 μ A typical current draw).
Feedback (Input): Input to error ampli?er. Regulates error ampli?er to 0.8V.
Ground (Return).
Low-Side Drive (Output): High-current driver output for external synchro-
nous MOSFET.
Switch (Return): High-side MOSFET driver return.
High-Side Drive (Output): High-current output-driver for the high-side
MOSFET. When V IN is between 3.0V to 5V, 2.5V threshold-rated MOSFETs
should be used. At V IN > 5V, 5V threshold MOSFETs should be used.
Boost (Input): Provides the drive voltage for the high-side MOSFET driver.
The gate-drive voltage is higher than the source voltage by V IN minus a
diode drop.
M9999-040805
2
April 2005
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