Datasheet > TOP209G

TOP209G

更新时间： 2024-01-24 00:24:35

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		开关
页数	文件大小	规格书
16页	447K
描述
Three-terminal Off-line PWM Switch

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技术参数
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TOP209G 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	DIP,
针数：	8	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.81	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
JESD-30 代码：	R-PDIP-T8	长度：	9.59 mm
功能数量：	1	端子数量：	8
最高工作温度：	125 °C	最低工作温度：	-40 °C
最大输出电流：	0.1 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	Not Qualified
座面最大高度：	4.45 mm	表面贴装：	NO
切换器配置：	SINGLE	最大切换频率：	85 kHz
技术：	CMOS	温度等级：	AUTOMOTIVE
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	宽度：	7.62 mm
Base Number Matches：	1

TOP209G 数据手册

TOP209/210

TOPSwitch Family Functional Description

TOPSwitchisaselfbiasedandprotected

linear control current-to-duty cycle

converter with an open drain output.

High efficiency is achieved through the

use of CMOS and integration of the

maximumnumberoffunctionspossible.

CMOS significantly reduces bias

currents as compared to bipolar or

discretesolutions. Integrationeliminates

externalpowerresistorsusedforcurrent

sensing and/or supplying initial start-up

bias current.

Auto-restart

MAX

Slope = PWM Gain

-16%/mA

MIN

During normal operation, the internal

output MOSFET duty cycle linearly

decreases with increasing CONTROL

pin current as shown in Figure 4. To

implement all the required control, bias,

and protection functions, the DRAIN

and CONTROL pins each perform

several functions as described below.

Refer to Figure 2 for a block diagram

and Figure 6 for timing and voltage

waveformsoftheTOPSwitchintegrated

circuit.

2.5

6.5

CD1

(mA)

PI-2047-060497

Figure 4. Relationship of Duty Cycle to CONTROL Pin Current.

Charging C

5.7 V

4.7 V

Control Voltage Supply

CONTROL pin voltage V_Cis the supply

or bias voltage for the controller and

driver circuitry. An external bypass

capacitorcloselyconnectedbetweenthe

CONTROL and SOURCE pins is

requiredtosupplythegatedrivecurrent.

The total amount of capacitance

connected to this pin (C_T) also sets the

auto-restart timing as well as control

loop compensation. V_Cis regulated in

either of two modes of operation.

Hysteretic regulation is used for initial

start-up and overload operation. Shunt

regulation is used to separate the duty

cycleerrorsignalfromthecontrolcircuit

supply current. During start-up, V_C

current is supplied from a high-voltage

switched current source connected

internally between the DRAIN and

CONTROL pins. The current source

provides sufficient current to supply the

control circuitry as well as charge the

total external capacitance (C_T).

Off

DRAIN

Switching

(a)

CD2

Discharging C

CD1

Discharging C

Charging C

5.7 V

4.7 V

8 Cycles

95%

Off

DRAIN

Switching

(b)

C is the total external capacitance

connected to the CONTROL pin

PI-1124A-060694

Figure 5. Start-up Waveforms for (a) Normal Operation and (b) Auto-restart.

8/97

1 234 5 6 7...16

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