- 您现在的位置：买卖IC网 > PDF目录15366 > MIC3838YMM TR (Micrel Inc)IC REG CTRLR ISO PWM 10-MSOP PDF资料下载
参数资料
| 型号： | MIC3838YMM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 2/11页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM 10-MSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电流/电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 50% |
| 电源电压： | 2 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC3838YMMTR MIC3838YMMTR-ND |
MIC3838/3839
Ordering Information
Part Number
Turn On
Turn Off
Micrel
Standard
MIC3838BMM
MIC3839BMM
Lead-Free
MIC3838YMM
MIC3839YMM
Threshold
12.5V
4.3V
Threshold
8.3V
4.1V
Temperature Range
–40 ° C to +85 ° C
–40 ° C to +85 ° C
Package
10-Pin MSOP
10-Pin MSOP
Pin Configuration
Pin Description
COMP 1
FB 2
ILIM 3
RAMP 4
RC 5
MSOP-10 (MM)
10 VREF
9 VDD
8 OUTA
7 OUTB
6 GND
Pin Number
1
2
3
4
5
Pin Name
COMP
FB
ILIM
RAMP
RC
Pin Function
COMP is the output of the error amplifier and the input of the PWM
comparator. The error amplifier in the MIC3838 is a true low-output imped-
ance, 4MHz operational amplifier. As such, the COMP pin can both source
and sink current. However, the error amplifier is internally current limited, so
that zero duty cycle can be externally forced by pulling COMP to GND.
The MIC3838 family features built-in full cycle soft start. Soft start is imple-
mented as a clamp on the maximum COMP voltage.
The inverting input to the error amplifier.
The input to the peak current, and overcurrent comparators. The
overcurrent comparator is only intended for fault sensing. Exceeding the
overcurrent threshold will cause a soft start cycle. An internal MOSFET
discharges the current sense filter capacitor to improve dynamic perfor-
mance of the power converter.
Input to the PWM comparator. Sawtooth ramp for PWM control. Allows for
either current-mode or voltage-mode control. An internal MOSFET dis-
charges the current sense filter capacitor.
The oscillator programming pin. Only two components are required to
program the oscillator, a resistor (tied between V DD and RC), and a capaci-
tor (tied between RC and GND). The approximate oscillator frequency is
determined by the simple formula:
F OSCILLATOR =
1.41
R × C
The recommended range of timing resistors is between 7k ? and 200k ? and
range of timing capacitors is between 100pF and 1000pF. Timing resistors
less than 7k ? should be avoided. For best performance, keep the leads
between components as short as possible. Separate ground and VDD
traces to the external timing network are encouraged.
6
GND
Ground. Return path for signal and gate drive functions.
MIC3838/3839
2
April 2005
相关PDF资料 |
PDF描述 |
|---|---|
| ADM8699ARN-REEL | IC SUPERVISOR MPU 4.65V 8SOIC |
| RBM40DCWD | CONN EDGECARD 80POS DIP .156 SLD |
| LTC2919CDDB-5#TRPBF | IC MONITOR PREC 5V 10-DFN |
| PCJ0E681MCL1GS | CAP ALUM 680UF 2.5V 20% SMD |
| 160-151KS | INDUCTOR RF CHIP .15UH 10% SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC3839 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Flexible Push-Pull PWM Controller |
| MIC3839BMM | 功能描述:IC REG CTRLR ISO PWM 10-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| MIC3839BMM TR | 功能描述:IC REG CTRLR ISO PWM 10-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| MIC3839YMM | 功能描述:DC/DC 开关控制器 Push-Pull DC/DC Controller (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MIC3839YMM TR | 功能描述:DC/DC 开关控制器 Push-Pull DC/DC Controller (Lead Free) RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
发布紧急采购，3分钟左右您将得到回复。