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參數(shù)資料
| 型號： | TNY266GNTL |
| 廠商： | POWER INTEGRATIONS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.56 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PDSO7 |
| 封裝： | LEAD FREE, PLASTIC, SMD-8/7 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大小： | 1212K |
| 代理商： | TNY266GNTL |
7
TNY263-268
G
4/05
Figure 14. 2.5 W Constant Voltage, Constant Current Battery Charger with Universal Input (85-265 VAC).
PI-2706-080404
+ 5 V
500 mA
RTN
D1
1N4005
C1
3.3
F
400 V
Fusible
RF1
8.2
C3
0.1
F
C7
10
F
10 V
85-265
VAC
L1
2.2 mH
D2
1N4005
D3
1N4005
D4
1N4005
R2
200 k
U2
LTV817
D5
1N5819
Shield
L2
3.3
H
C5
330
F
16 V
C2
3.3
F
400 V
C6
100
F
35 V
R7
100
R4
1.2
1/2 W
Q1
2N3904
R8
270
VR1
BZX79-
B3V9
3.9 V
U1
TNY264
C3
2.2 nF
D6
1N4937
R6
1
1/2 W
T1
R1
1.2 k
1
8
4
5
R3
22
R9
47
C8 680 pF
Y1 Safety
TinySwitch-II
D
S
BP
EN/UV
The TinySwitch-II does not require a bias winding to provide
power to the chip, because it draws the power directly from
the DRAIN pin (see Functional Description above). This
has two main benets. First, for a nominal application, this
eliminatesthecostofabiaswindingandassociatedcomponents.
Secondly, for battery charger applications, the current-voltage
characteristic often allows the output voltage to fall close to
zero volts while still delivering power. This type of application
normally requires a forward-bias winding which has many
more associated components. With TinySwitch-II, neither are
necessary.Forapplicationsthatrequireaverylowno-loadpower
consumption (50 mW), a resistor from a bias winding to the
BYPASS pin can provide the power to the chip. The minimum
recommended current supplied is 750 A. The BYPASS pin in
thiscasewillbeclampedat6.3V.Thismethodwilleliminatethe
power draw from the DRAIN pin, thereby reducing the no-load
power consumption and improving full-load efciency.
Current Limit Operation
Each switching cycle is terminated when the DRAIN current
reaches the current limit of the TinySwitch-II. Current limit
operation provides good line ripple rejection and relatively
constant power delivery independent of input voltage.
BYPASS Pin Capacitor
The BYPASS pin uses a small 0.1 F ceramic capacitor for
decoupling the internal power supply of the TinySwitch-II.
Application Examples
The TinySwitch-II is ideal for low cost, high efciency power
supplies in a wide range of applications such as cellular phone
chargers, PC standby, TV standby,AC adapters, motor control,
appliance control and ISDN or a DSL network termination.
The 132 kHz operation allows the use of a low cost EE13 or
EF12.6 core transformer while still providing good efciency.
The frequency jitter in TinySwitch-II makes it possible to use a
singleinductor(ortwosmallresistorsforunder3Wapplications
if lower efciency is acceptable) in conjunction with two input
capacitors for input EMI ltering. The auto-restart function
removes the need to oversize the output diode for short circuit
conditions allowing the design to be optimized for low cost
and maximum efciency. In charger applications, it eliminates
the need for a second optocoupler and Zener diode for open
loop fault protection.Auto-restart also saves the cost of adding
a fuse or increasing the power rating of the current sense
resistors to survive reverse battery conditions. For applications
requiring under-voltage lock out (UVLO), such as PC standby,
the TinySwitch-II eliminates several components and saves
cost. TinySwitch-II is well suited for applications that require
constant voltage and constant current output. As
TinySwitch-II
is always powered from the input high voltage, it
therefore does not rely on bias winding voltage. Consequently
this greatly simplies designing chargers that must work down
to zero volts on the output.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TNY266GN-TL | 功能描述:交流/直流開關(guān)轉(zhuǎn)換器 9.5W 85-265 VAC 15W/230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel |
| TNY266GTL | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:Enhanced, Energy Efficient, Low Power Off-line Switcher |
| TNY266G-TL | 功能描述:IC OFFLINE SWIT OTP OCP HV 8SMD RoHS:否 類別:集成電路 (IC) >> PMIC - AC-DC 轉(zhuǎn)換器，離線開關(guān) 系列:TinySwitch®-II 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
| TNY266P | 功能描述:IC OFFLINE SWIT OTP OCP HV 8DIP RoHS:否 類別:集成電路 (IC) >> PMIC - AC-DC 轉(zhuǎn)換器，離線開關(guān) 系列:TinySwitch®-II 標準包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應商設備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
| TNY266P_1 | 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:4.9W DVD power supply |
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