参数资料
型号: MIC2159YMME
厂商: Micrel Inc
文件页数: 2/16页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 10-MSOP
标准包装: 100
系列: SYNCHRONOUS-itty™
PWM 型: 电压模式
输出数: 1
频率 - 最大: 450kHz
占空比: 92%
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)裸露焊盘
包装: 管件
产品目录页面: 1092 (CN2011-ZH PDF)
其它名称: 576-1588
Micrel, Inc.
Ordering Information
MIC2159
Part Number
MIC2159YMME
Output Voltage
Adj
Frequency
400KHz
Juction Temperature Range
-40 ° C to +125 ° C
Package
10-pin ePAD MSOP
Pin Configuration
10-lead e-PAD MSOP (MME)
Pin Description
Pin Number
(MSOP-10)
1
2
3
4
5
6
7
8
9
10
Pin Name
V IN
V DD
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 Vin is ≤ 5V, V DD should be connected to Vin.
Current Sense. Current-limit comparator non-inverting input. The current limit is sensed across
the FET during the ON time. The current 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 amplifier. Regulates error amplifier to 0.8V.
Ground (Return)
Low-Side Drive (Output): High-current driver output for external synchronous MOSFET.
Switch (Return): High-side MOSFET driver return
High-Side Drive (Output): High current output-driver for the high-side MOSFET.
When Vin is below 5v, 2.5v threshold FETs should be used. At Vin > 5V, 4.5V threshold FETs
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.
March 2009
2
M9999-030509-B
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