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参数资料
| 型号： | TNY277PG |
| 厂商： | POWER INTEGRATIONS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.481 A SWITCHING REGULATOR, PDIP7 |
| 封装： | ROHS COMPLIANT, PLASTIC, MS-001AB, DIP-8/7 |
| 文件页数： | 12/24页 |
| 文件大小： | 1024K |
| 代理商： | TNY277PG |
Rev. I 01/09
2
TNY274-280
www.powerint.com
Pin Functional Description
DRAIN (D) Pin:
This pin is the power MOSFET drain connection. It provides
internal operating current for both startup and steady-state
operation.
BYPASS/MULTI-FUNCTION (BP/M) Pin:
This pin has multiple functions:
It is the connection point for an external bypass capacitor for
the internally generated 5.85 V supply.
It is a mode selector for the current limit value, depending on
the value of the capacitance added. Use of a 0.1 μF
capacitor results in the standard current limit value. Use of a
1 μF capacitor results in the current limit being reduced to
that of the next smaller device size. Use of a 10 μF capacitor
results in the current limit being increased to that of the next
larger device size for TNY275-280.
It provides a shutdown function. When the current into the
bypass pin exceeds I
SD, the device latches off until the
BP/M voltage drops below 4.9 V, during a power down. This
can be used to provide an output overvoltage function with a
Zener connected from the BP/M pin to a bias winding supply.
1.
2.
3.
ENABLE/UNDERVOLTAGE (EN/UV) Pin:
This pin has dual functions: enable input and line undervoltage
sense. During normal operation, switching of the power
MOSFET is controlled by this pin. MOSFET switching is
terminated when a current greater than a threshold current is
drawn from this pin. Switching resumes when the current being
Figure 2.
Functional Block Diagram.
PI-4077-062306
CLOCK
OSCILLATOR
5.85 V
4.9 V
SOURCE
(S)
S
R
Q
DCMAX
BYPASS/
MULTI-FUNCTION
(BP/M)
+
-
V
ILIMIT
FAULT
PRESENT
CURRENT LIMIT
COMPARATOR
ENABLE
LEADING
EDGE
BLANKING
THERMAL
SHUTDOWN
+
-
DRAIN
(D)
REGULATOR
5.85 V
BYPASS PIN
UNDER-VOLTAGE
1.0 V + V
T
ENABLE/
UNDER-
VOLTAGE
(EN/UV)
Q
115 μA
25 μA
LINE UNDER-VOLTAGE
RESET
AUTO-
RESTART
COUNTER
JITTER
1.0 V
6.4 V
BYPASS
CAPACITOR
SELECT AND
CURRENT
LIMIT STATE
MACHINE
OVP
LATCH
Figure 3.
Pin Conguration.
PI-4078-080905
D
S
BP/M
S
EN/UV
P Package (DIP-8C)
G Package (SMD-8C)
8
5
7
1
4
2
S
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TNY277PN | 功能描述:交流/直流开关转换器 18.5W 85-265 VAC 23.5W/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
| TNY277PN-TL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY277PTL | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY278G | 制造商:POWERINT 制造商全称:Power Integrations, Inc. 功能描述:Energy Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range |
| TNY278GN | 功能描述:交流/直流开关转换器 21.5W 85-265 VAC 28W/230 VAC RoHS:否 制造商:STMicroelectronics 输出电压:800 V 输入/电源电压（最大值）:23.5 V 输入/电源电压（最小值）:11.5 V 开关频率:115 kHz 电源电流:1.6 mA 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:SSO-10 封装:Reel |
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