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参数资料
| 型号： | DS2148GN |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Digital Transmission Interface |
| 英文描述： | DATACOM, PCM TRANSCEIVER, BGA49 |
| 封装： | CABGA-49 |
| 文件页数： | 15/15页 |
| 文件大小： | 387K |
| 代理商： | DS2148GN |
MAX8614A/MAX8614B
Dual-Output (+ and -) DC-DC
Converters for CCD
_______________________________________________________________________________________
9
Detailed Description
The MAX8614A/MAX8614B generate both a positive and
negative output voltage by combining a step-up and an
inverting DC-DC converter on one IC. Both the step-up
converter and the inverter share a common clock. Each
output is independently regulated.
Each output is separately controlled by a pulse-width-
modulated (PWM) current-mode regulator. This allows
the converters to operate at a fixed frequency (1MHz)
for use in noise-sensitive applications. The 1MHz
switching rate allows for small external components.
Both converters are internally compensated and are
optimized for fast transient response (see the Load-
Transient Response/Voltage Positioning section).
Step-Up Converter
The step-up converter generates a positive output volt-
age up to 24V. An internal power switch, internal True-
Shutdown load switch (PVP), and external catch diode
allow conversion efficiencies as high as 90%. The inter-
nal load switch disconnects the battery from the load
by opening the battery connection to the inductor, pro-
viding True Shutdown. The internal load switch stays on
at all times during normal operation. The load switch is
used in the control scheme for the converter and can-
not be bypassed.
LXN
VCC
PVP
REF
FBN
ONBST
MAX8614A
MAX8614B
LXP
SEQ
ONINV
AVCC
GND
PGND
FBP
1MHz
OSCILLATOR
REFERENCE
1.25V
STEP-UP
CURRENT SENSE
INVERTER
CURRENT SENSE
SOFT-START
ERROR
AMPLIFIER
PWM
COMPARATOR
INVERTER
CONTROL
LOGIC
BIAS
AND
CONTROL
BLOCK
1.01V
ERROR
AMPLIFIER
PWM
COMPARATOR
STEP-UP
CONTROL
LOGIC
FLT
Functional Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| DS2148G | DATACOM, PCM TRANSCEIVER, BGA49 |
| DS2148TN | DATACOM, PCM TRANSCEIVER, PQFP44 |
| DS2148T | DATACOM, PCM TRANSCEIVER, PQFP44 |
| DS2151QNB | DATACOM, FRAMER, PQCC44 |
| DS2151QB | DATACOM, FRAMER, PQCC44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2148GN+ | 功能描述:网络控制器与处理器 IC 5V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148GNB | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148T | 功能描述:网络控制器与处理器 IC 5V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148T+ | 功能描述:网络控制器与处理器 IC 5V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2148TA2 | 功能描述:网络控制器与处理器 IC 5V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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