参数资料
型号: MIC2179BSM
厂商: Micrel Inc
文件页数: 2/13页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 1.5A 20SSOP
标准包装: 67
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 16.5 V
输入电压: 4.5 V ~ 16.5 V
PWM 型: 电流模式
频率 - 开关: 200kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
包装: 管件
供应商设备封装: 20-SSOP
Micrel, Inc.
Ordering Information
MIC2179
Standard*
Part Number
Pb-Free
Voltage
Temperature Range
Package
MIC2179BSM
MIC2179YSM
Adj.
-40°C to +85°C
20-Lead SSOP
MIC2179-3.3BSM MIC2179-3.3YSM
MIC2179-5.0BSM MIC2179-5.0YSM
3.3V
5.0V
-40°C to +85°C
-40°C to +85°C
20-Lead SSOP
20-Lead SSOP
* Standard product will be supported as Pb-Free IAW PCCN #040004 effective 1-1-2005 pending residual depletion.
Pin Configuration
PGND 1
PGND 2
SW 3
NC 4
PWM 5
PWRGD 6
FB 7
COMP 8
SGND 9
SGND 10
20 PGND
19 PGND
18 NC
17 VIN
16 VIN
15 EN
14 BIAS
13 SYNC
12 SGND
11 SGND
20-Lead Wide SSOP
Pin Description
Pin Number
1, 2, 19, 20
3
5
6
7
8
9–12
13
14
15
16, 17
4, 18
Pin Name
PGND
SW
PWM
PWRGD
FB
COMP
SGND
SYNC
BIAS
EN
VIN
NC
Pin Function
Power Ground: Connect all pins to central ground point.
Switch (Output): Internal power MOSFET output switches.
PWM/Skip-Mode Control (Input): Logic-level input. Controls regulator
operating mode. Logic low enables PWM mode. Logic high enables skip
mode. Do not allow pin to float.
Error Flag (Output): Open-drain output. Active low when FB input is 10%
below the reference voltage (V REF ).
Feedback (Input): Connect to output voltage divider resistors.
Compensation: Output of internal error amplifier. Connect capacitor or
series RC network to compensate the regulator control loop.
Signal Ground: Connect all pins to ground, PGND.
Frequency Synchronization (Input): Optional. Connect an external clock
signal to synchronize the oscillator. Leading edge of signal above 1.7V
terminates switching cycle. Connect to SGND if not used.
Internal 3.3V Bias Supply: Decouple with 0.01μF bypass capacitor to
SGND. Do not apply any external load.
Enable (Input): Logic high enables operation. Logic low shuts down
regulator. Do not allow pin to float.
Supply Voltage (Input): Requires bypass capacitor to PGND. Both pins
must be connected to V IN .
not internally connected.
June 2009
2
M9999-063009
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MIC2179BSM TR 功能描述:直流/直流开关调节器 1.5A 200kHz Synchronous Switcher in SSOP Pkg RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC2179SYM 制造商:RF Micro Devices Inc 功能描述:
MIC2179YSM 功能描述:直流/直流开关调节器 1.5A 200kHz Synchronous Switcher in SSOP Pkg (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC2179YSM TR 功能描述:直流/直流开关调节器 1.5A 200kHz Synchronous Switcher in SSOP Pkg (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC2179YSM-TR 功能描述:Buck Switching Regulator IC Positive Adjustable 1.245V 1 Output 1.5A 20-SSOP (0.209", 5.30mm Width) 制造商:microchip technology 系列:- 包装:剪切带(CT) 零件状态:停产 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:1 电压 - 输入(最小值):4.5V 电压 - 输入(最大值):16.5V 电压 - 输出(最小值/固定):1.245V 电压 - 输出(最大值):16.5V 电流 - 输出:1.5A 频率 - 开关:200kHz 同步整流器:无 工作温度:-40°C ~ 125°C (TJ) 安装类型:表面贴装 封装/外壳:20-SSOP(0.209",5.30mm 宽) 供应商器件封装:20-SSOP 标准包装:1