参数资料
型号: MIC2186YM TR
厂商: Micrel Inc
文件页数: 1/15页
文件大小: 0K
描述: IC REG CTRLR BST FLYBK CM 16SOIC
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 440kHz
占空比: 85%
电源电压: 2.9 V ~ 14 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: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
其它名称: MIC2186YMTR
MIC2186YMTR-ND
MIC2186
General Description
MIC2186
Low Voltage PWM Control IC
Features
Micrel, Inc.
Micrel’s MIC2186 is a high efficiency boost PWM control IC.
With its wide input voltage range of 2.9V to 14V, the MIC2186
can be used to efficiently boost voltages in 1- or 2-cell Li Ion
battery powered applications, as well as to boost voltages in
fixed 3.3V, 5V, or 12V systems. Its powerful 1.6 ? output
driver allows the MIC2186 to supply large output currents with
the selection of proper external MOSFETs.
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Input voltage range: 2.9V to 14V
1.6 ? output driver
Oscillator frequency of 100kHz/200kHz/400kHz
Frequency sync to 600kHz
Front edge blanking
PWM Current Mode Control
Selectable light load SKIP mode
The MIC2186 can be configured to operate at 100kHz,
200kHz, or 400kHz. With it’s fixed frequency PWM architec-
ture, and easily synchronized drive, the MIC2186 is ideal for
noise-sensitive telecommunications applications.
MIC2186 also features a low current shutdown mode of
0.5 μ A and programmable undervoltage lockout. A manually
selectable SKIP Mode allows high efficiencies in light load
situations.
The MIC2186 is available in 16 pin SOIC and QSOP package
options with an operating range from –40 ° C to 125 ° C.
? 600 μ A quiescent current (SKIP-Mode)
? 0.5 μ A shutdown current
? Cycle-by-Cycle current limiting
? Frequency foldback protection
? Adjustable under-voltage lockout
? Precision 1.245V reference output
? 16 pin SOIC and QSOP package options
? Selectable 50% maximum duty cycle for flyback applica-
tions
Applications
Ordering Information
Part Number
?
?
?
?
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DC power distribution systems
Wireless Modems
ADSL line cards
SLIC power supplies
1-and 2-cell Li Ion battery operated equipment
Ambient
Standard Pb-Free
Frequency (kHz)
Voltage
Temp. Range
Package
MIC2186BM
MIC2186BQS
MIC2186YM
MIC2186YQS
100 / 200 / 400
100 / 200 / 400
Adj
Adj
–40 ° C to +125 ° C
–40 ° C to +125 ° C
16-lead SOP
16-lead QSOP
Typical Application
V IN = 3.3V
2.2 μ H
MBR2535CT
V OUT = 12V
C IN
120 μ F
20V
1
7
VINA
EN/UVLO
12V Output Efficiency
13
15
10
4
8
2
11
HIDC
FREQ/2
VDD
COMP
VREF
SKIP
SYNC
MIC2186
VINP
FB
OUTN
CSH
PGND
16
6
14
9
12
Si4404DY
(x2)
4.5m ?
C OUT
150 μ F(x2)
20V
95
90
85
80
75
70
SS
3
SGND
5
65
60
0
V IN = 3.3V
0.5 1 1.5 2 2.5
3
OUTPUT CURRENT (A)
Adjustable Output Boost Converter
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 2005
1
M9999-042205
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