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| 型号： | MC33567D-1R2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/12页 |
| 文件大小： | 88K |
| 描述： | IC REG CTRLR DUAL OUT 8SOIC |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 1 |
| 类型： | 正，固定式 |
| 输出数： | 2 |
| 输出电压： | 1.52V，1.82V |
| 电流 - 电源： | 6.3mA |
| 输入电压： | 9 V ~ 12.5 V |
| 工作温度： | 0°C ~ 80°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 剪切带 (CT) |
| 其它名称： | MC33567D-1R2OSCT |
MC33567
http://onsemi.com
4
OPERATING DESCRIPTION
Introduction
The MC33567 series is a family of Dual Linear FET
Controllers designed for Power Management applications
where high current, voltage regulation is needed. Some
computer applications include:
" 1.2 V Power Supply
" 1.515 V AGP (Advanced Graphic Port) and GTL+
(Gunning Transistor Logic Intels electrical bus
technology)
" 1.818 V I/O planes on motherboards
" 2.3 V Power Supply
" 2.525 V Clock and memory
The MC33567 provides tight output voltage regulation,
(V
out
), and incorporates individual SHDN
controls for each
FET controller and voltage protection by sensing the output
voltage.
Output:
The MC33567 provides tight output voltage regulation
from one or two supply voltages using 2 external NChannel
MOSFETs. Each controller operates independently and
regulates the output voltage to a predetermined level (1.2 V,
1.515 V 1.818 V, 2.3 V or 2.525 V). In addition, regulator 2
of the MC335671 incorporates a V
in
bypass mode on which
the external FET is fully enhanced.
Shutdown:
The regulated outputs of the MC33567 can be disabled
with the use of the SHDN
pin. It also determines the output
voltage level. SHDN
can be controlled externally from
board signals like the AGP or GTL+ as shown in Figure 3.
Figure 3. 1.5 V/3.3 V AGP Card Detection
*V
in
while on bypass mode (MC335671 only)
1
2
3
4
8
7
6
5
MC33567
DRV2
SENSE2
3.3 V
AGP
Card Type
Detection
AGP
Card
Voltage
V
out
or V
in
*
12 V (V
CC
)
3.3 V (V
in
)
SHDN2
10 kW
Listed below are the SHDN
threshold voltage levels and
the corresponding regulator output voltages:
1. If the SHDN
pin is left open, the output voltage is set
to its regulated value.
2. If a voltage less than 0.8 V is applied to the SHDN
pin,
the output voltage is set to 0 V.
3. If a voltage greater than 1.3 V and less than 4.1 V is
applied to the SHDN
pin, the output voltage is set to its
regulated voltage.
4. If the SHDN
voltage is pulled above 4.1 V, the
MC33567 enters a V
in
bypass mode. In this mode, the
MOSFET is fully enhanced and the output voltage is
the MOSFET drain voltage (V
in
) minus the MOSFET
drainsource on voltage V
DS(on)
. This feature is only
available on REGULATOR 2 of the MC335671.
Table 1 summarizes the output voltage options and its
relationship with V
SHDN
.
Table 1. Logic Table for SHDN
Pin
Device
V
SHDN
(V)
V
out
(V)
MC335671
REGULATOR 1
No Connect
t0.8 V
u1.3 V
1.818 V
0 V
1.818 V
REGULATOR 2
No Connect
t0.8 V
1.3 V t V
SHDN
t 4.1 V
u 4.1 V
1.515 V
0 V
1.515 V
V
in
V
DS(on)
(Bypass
Mode)
MC335672
REGULATOR 1 &
REGULATOR 2
No Connect
t0.8 V
u1.3 V
2.525 V
0 V
2.525 V
MC335673
REGULATOR 1
No Connect
t0.8 V
u1.3 V
2.3 V
0 V
2.3 V
REGULATOR 2
No Connect
t0.8 V
u 1.3 V
1.2 V
0 V
1.2 V
Undervoltage Detection:
If V
out
drops below 75% of the regulated threshold for
greater than 250 祍 or a short circuit condition is present, that
output will go into short circuit or Hiccup Mode. While in
Hiccup mode, the output is turned ON for 1.0 ms and OFF
for 40 ms for a duty cycle of 1:41 as shown in Figure 4. This
mode will continue as long as the fault is present. Once the
fault is removed, the regulator will resume normal
operation.
40 ms
1 ms
Figure 4. Hiccup Mode Duty Cycle
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33567D-1R2G | 功能描述:低压差控制器 - LDO ANA DUAL LIN CNTR HI CUR RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MC33567D-2R2 | 功能描述:IC REG CTRLR DUAL 2.53V 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性晶体管驱动器 系列:- 产品培训模块:More Information on LDOs 标准包装:2,500 系列:- 类型:正，固定式 输出数:2 输出电压:2.8V，3.3V 电流 - 电源:12mA 输入电压:5 V ~ 22 V 工作温度:0°C ~ 70°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| MC33567D-3R2 | 功能描述:低压差控制器 - LDO Dual 2.5V Output RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MC33567D-3R2G | 功能描述:低压差控制器 - LDO Dual 2.5V Output w/Shutdown RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MC3356SDG | 制造商:ON Semiconductor 功能描述: |
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