- 您现在的位置：买卖IC网 > PDF目录16794 > MC34704BEPR2 (Freescale Semiconductor)IC PWR MNGMT DC-DC MULT 56-QFN PDF资料下载
参数资料
| 型号： | MC34704BEPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 24/54页 |
| 文件大小： | 0K |
| 描述： | IC PWR MNGMT DC-DC MULT 56-QFN |
| 特色产品： | MC34704 Multi-channel Power Management IC (PMIC) |
| 标准包装： | 1 |
| 应用： | 处理器 |
| 电流 - 电源： | 86mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-VFQFN 裸露焊盘 |
| 供应商设备封装： | 56-QFN-EP（7x7） |
| 包装： | 标准包装 |
| 产品目录页面： | 809 (CN2011-ZH PDF) |
| 其它名称： | MC34704BEPR2DKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
? The output is monitored for over-current and short-circuit
conditions
? The regulator is monitored for over-temperature conditions
Operation Modes
The switcher will be active when:
? VG is in regulation AND
? There is no GrpC (OR GrpE) shutdown command through
the I 2 C interface AND
? No faults exist that would cause GrpC (OR GrpE) to shut
REG7 (Only 34704A)
This is a none-synchronous buck-boost inverting PWM
voltage-mode control DC/DC regulator.
when REG7 is powered up in the sequence.
The switcher will operate in DCM at very light loads to
allow pulse skipping.
VOUT7 will be discharged every time the regulator is
shutting down and it will be held high to ground by the
discharge FET as long as possible.
down
Characteristics
REG6 (Only 34704A)
This is a synchronous boost PWM voltage-mode control
DC/DC regulator.
when REG6 is powered up in the sequence.
The switcher will operate in DCM at very light loads to
allow pulse skipping.
VOUT6 will be discharged every time the regulator is
shutting down and it will be held low by the discharge FET as
long as possible.
Characteristics
? It powers up directly from the battery
? Operates at a switching frequency equals to F SW2
?
?
?
?
?
?
?
?
?
It powers up directly from the battery
Operates at a switching frequency equals to F SW2
Drives an external P-channel power MOSFET
The output is ±2% accuracy
Output voltage is adjustable by means of an external
resistor divider
The output can be adjusted up or down at 2.5% steps for
a total of 10% on each direction allowing Dynamic Voltage
Scaling.
All gate drive circuits are supplied from V G
Uses external compensation, the type is up to the designer
The output is monitored for under-voltage and over-
voltage conditions
? Drives integrated low R DS(ON) N-channel power
MOSFETs (NVHV_LC) as its output stage
? It offers load disconnect from the input battery when the
output is off (True Cut-Off)
? The output is ±4% accuracy
? Output voltage is adjustable by means of an internal
resistor divider
? The output can be adjusted up or down at 2.5% steps for
a total of 10% on each direction allowing Dynamic Voltage
Scaling
? Uses a bootstrap network with an internal diode to power
its synchronous MOSFET
? All gate drive circuits are supplied from VG.
? Uses integrated compensation.
? The output is monitored for under-voltage and over-
voltage conditions
? The output is monitored for over-current and short-circuit
conditions
? The regulator is monitored for over-temperature conditions
Operation Modes
The switcher will be active when:
? VG is in regulation AND
? There is no GrpC shutdown command through the I 2 C
interface AND
? No faults exist that would cause GrpC to shut down
Operation Modes
The switcher will be active when:
? VG is in regulation AND
? There is no GrpC shutdown command through the I 2 C
interface AND
? No faults exist that would cause GrpC to shut down
REG8
This is a synchronous boost PWM voltage-mode control
DC/DC regulator.
when REG8 is powered up in the sequence.
VOUT8 will be discharged every time the regulator is
shutting down and it will be held to ground by the discharge
FET as long as possible.
This regulator offers either voltage regulation for organic
LEDs or current regulation for LCD backlighting LEDs. It
provides either voltage or current feedback for these
purposes through the same feedback pin.
The regulator cannot drive only 1LED with a forward
voltage drop of less than the battery input voltage.
The processor would set the REG8 register through I 2 C
before enabling REG8 to indicate if voltage regulation or
current regulation will be used.
Characteristics
? It powers up directly from the battery
34704
Analog Integrated Circuit Device Data
24
Freescale Semiconductor
相关PDF资料 |
PDF描述 |
|---|---|
| GCB05DHNT | CONN EDGECARD 10POS .050 DIP SLD |
| GCB05DHHT | CONN EDGECARD 10POS .050 DIP SLD |
| H3AAS-1606G | IDC CABLE - HSC16S/AE16G/HSC16S |
| V300C12E150BG2 | CONVERTER MOD DC/DC 12V 150W |
| H3CCH-1606G | IDC CABLE - HKC16H/AE16G/HKC16H |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34705 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 12WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 12WAY |
| MC34707 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 14WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 14WAY 制造商:PRIVATE LABEL 功能描述:HEADER, VERTICAL, 14WAY, Product Range:MULTICOMP - MC34 Series, Contact Terminat 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 14POS, 3MM, Series:2261(5561), Pitch Spacing:3mm, Contact Termination:Through Hole Vertical, No. of Contacts:14, No. of Rows:2, Connector Mounting:PCB, Gender:Receptacle, Contact Material:Copper Alloy , RoHS Compliant: Yes |
| MC34708VK | 功能描述:PMIC 解决方案 PMIC 5S 6LDO BST 10BTADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MC34708VKR2 | 功能描述:PMIC 解决方案 PMIC 5S 6LDO BST 10BTADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| MC34708VM | 功能描述:PMIC 解决方案 PMIC 5S 6LDO BST 10BtADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。