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参数资料
| 型号： | SP6656EB |
| 厂商： | Exar Corporation |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP6656 |
| 标准包装： | 1 |
| 系列： | * |
PIN DESCRIPTION
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
OVSI
PIN NAME
P VIN
V IN
OVSO
OVSI
EN
FB
V OUT
GND
P GND
LX
OVSO
DESCRIPTION
Input voltage power pin. Inductor charging current passes through this pin.
Internal supply voltage. Control circuitry powered from this pin.
Output Voltage Selection Output. OVSI = 1 pulls this node to
GND, OVSI = 0, this node is open.
Output Voltage Select Input. See table 1 for definition.
EN = 1, device is enabled. EN = 0, All internal circuitry is disabled and
power switches are opened.
External feedback network input connection. Connect a resistor from
FB to ground and FB to V OUT to set the output voltage. This pin
regulates to the internal bandgap reference voltage of 0.8V.
Output voltage sense pin. Used by the timing circuit to set minimum on
and off times.
Internal ground pin. Control circuitry returns current to this pin.
Power ground pin. Synchronous rectifier current returns through this pin.
Inductor switching node. Inductor tied between this pin and the output
capacitor to create regulated output voltage.
V OUT
VO
Output Voltage
0
1
Open
Short to GND
V OUT_LOW = 0.8 (R I +R F ) / R I
V OUT_HIGH = 0.8 (R A +R F ) /R A
FB
R F
CF
22pF
R S OVSO
Table 1. Output Voltage Selection
R I
Note: R A = R I R S
R I +R S
FUNCTIONAL DIAGRAM
DRVON
VOLOW
V IN
V OUT
P VIN
T ONOVER
MIN Ton
Internal Supply
T ONOVER Min Ton
Min T ON = K ON /(V IN -V OUT )
M
1
OVR_I
Vos
REF + - REF'
V RAMP
VOLOW
+
C
-
R
S
Q
_
Q
DRVON
DRIVER
ILIM/M
+
-
C
FB
+
- FB'
RST
DRVON
OVR_I
LX
EN
Ref
Block
REF
UVLO
TSD
BLANK
One-Shot
=100ns
+
-
C
Zero_X
P GND
ILIM/M
T OFF =
OVSI
GND
DRVON
K OFF /V OUT
OVR_I
OVSO
BLANK
BLANK = T BLANK (=100ns) or T OFF = K OFF /V OUT
Date: 3/6/06
SP6656, 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output
3
? Copyright 2006 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6656ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output |
| SP6656ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Bit Programmable Output |
| SP6656ER3 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output |
| SP6656ER3-L | 功能描述:DC/DC 开关控制器 High Eff. 400mA Sync. Buck Reg 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 |
| SP6656ER3-L/TR | 功能描述:DC/DC 开关控制器 High Eff 400mA Synchronous 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 |
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