Datasheet > SM74203

SM74203

更新时间： 2022-03-19 17:05:10

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
24页	544K
描述
SM74203 60V Low Side Controller for Boost and SEPIC

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中文翻译

获取价格

数据手册

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SM74203 数据手册

Symbol

SOFT-START

I_SS

Parameter

Conditions

Min

Typ

Max

Units

Soft-start Current Source

Soft-start to COMP Offset

µA

V_SS-OFF

0.35

0.55

0.75

OSCILLATOR

(Note 5)

170

525

865

200

600

990

230

675

1115

3.8

kHz

RT to GND = 84.5 kΩ

f_SW

RT to GND = 27.4 kΩ

RT to GND = 16.2 kΩ

Synchronization Rising Threshold

V_SYNC-HI

PWM COMPARATOR

V_COMP= 2V

t_COMP-DLY

Delay from COMP to OUT Transition

CS stepped from 0V to 0.4V

V_COMP= 0V

D_MIN

D_MAX

Minimum Duty Cycle

Maximum Duty Cycle

0.33

5.2

A_PWM

COMP to PWM Comparator Gain

COMP Pin Open Circuit Voltage

COMP Pin Short Circuit Current

V/V

V_COMP-OC

I_COMP-SC

V_FB= 0V

4.3

0.6

6.1

1.5

V_COMP= 0V, V_FB= 1.5V

1.1

SLOPE COMPENSATION

V_SLOPE

MOSFET DRIVER

V_SAT-HI

Slope Compensation Amplitude

105

130

Output High Saturation Voltage (VCC –

VOUT)

I_OUT= 50 mA

0.25

0.75

V_SAT-LO

t_RISE

Output Low Saturation Voltage (VOUT)

OUT Pin Rise Time

I_OUT= 100 mA

0.25

OUT Pin load = 1 nF

t_FALL

OUT Pin Fall Time

THERMAL CHARACTERISTICS

T_SD

T_SD-HYS

θ_JA

Thermal Shutdown Threshold

165

°C

Thermal Shutdown Hysteresis

Junction to Ambient Thermal Resistance

MUB-10A Package

200

°C/W

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. The Recommended Operating Limits define the conditions within

which the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.

Note 2: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.

Note 3: Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical

Quality Control (SQC) methods. Limits are used to calculate National’s Average Outgoing Quality Level (AOQL).

Note 4: Device thermal limitations may limit usable range.

Note 5: Specification applies to the oscillator frequency.

Note 6: VCC provides bias for the internal gate drive and control circuits.

www.national.com

1 2 3 456 7 8...24

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SM74301SD/NOPB	NSC	获取价格	IC,SMPS CONTROLLER,VOLTAGE-MODE,BCDMOS,LLCC,8PIN,PLASTIC
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