Datasheet > UC3824N

UC3824N

更新时间： 2024-09-25 02:58:47

品牌	Logo	应用领域
德州仪器 - TI		开关光电二极管
页数	文件大小	规格书
14页	704K
描述
HIGH SPEED PWM CONTROLLER

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替代型号

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UC3824N 数据手册

UC1824

UC2824

UC3824

www.ti.com

SLUS326A–MARCH 1997–REVISED JULY 2007

HIGH SPEED PWM CONTROLLER

FEATURES

DESCRIPTION

•

Complementary Outputs

The UC1824 family of PWM control devices is

optimized for high frequency switched mode power

supply applications. Particular care was given to

•

Practical Operation Switching Frequencies to

1 MHz

minimizing

propagation

delays

through

the

•

50-ns Propagation Delay to Output

comparators and logic circuitry while maximizing

bandwidth and slew rate of the error amplifier. This

controller is designed for use in either current mode

or voltage mode systems with the capability for input

voltage feed-forward.

High Current Dual Totem Pole Outputs (1.5 A

Peak)

•

Wide Bandwidth Error Amplifier

Fully Latched Logic With Double Pulse

Suppression

Protection circuitry includes

current limit

comparator with a 1-V threshold, a TTL compatible

shutdown port, and a soft-start pin which doubles as

a maximum duty cycle clamp. The logic is fully

latched to provide jitter free operation and prohibit

multiple pulses at an output. An under-voltage

lockout section with 800 mV of hysteresis assures

low start up current. During under-voltage lockout,

the outputs are high impedance.

•

Pulse-by-Pulse Current Limiting

Soft Start/Maximum Duty Cycle Control

Under-Voltage Lockout with Hysteresis

Low Start Up Current (1.1 mA)

Trimmed Bandgap Reference (5.1 V ± 1%)

BLOCK DIAGRAM

Clock

R_T

OSC

PWM Latch (Set Dom.)

C_T

1.25V

Ramp

E/A Out

Wide Bandwidth

(Set Dom.)

V_IN

Error

Amp

INV

Inhibit

9mA

13 V_C

11 Out

Soft Start

I_LIM

CPRTR

14 INV_OUT

12 Pwr Gnd

Shutdown

CPRTR

I_LIM/SD

1.4V

Output

Inhibit

Internal

Bias

V_CC15

UVLO

VCC Good

VREF Good

REF

GEN

Gnd 10

GATE

10 V_REF5.1V

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...14

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UC3824N 替代型号

型号	品牌	替代类型	描述	数据表
UC2824N	TI	完全替代	HIGH SPEED PWM CONTROLLER
UC3825N	TI	完全替代	High Speed PWM Controller

与UC3824N相关器件

型号	品牌	获取价格	描述	数据表
UC3824Q	ETC	获取价格	Current/Voltage-Mode SMPS Controller
UC3824QTR	ETC	获取价格	Current/Voltage-Mode SMPS Controller
UC3825	TI	获取价格	High Speed PWM Controller
UC3825	ONSEMI	获取价格	high speed pwm controller
UC3825A	TI	获取价格	High Speed PWM Controller
UC3825AD	TI	获取价格	High Speed PWM Controller
UC3825ADTR	TI	获取价格	High Speed PWM Controller
UC3825ADW	TI	获取价格	High Speed PWM Controller
UC3825ADWG4	TI	获取价格	HIGH-SPEED PWM CONTROLLER
UC3825ADWR	TI	获取价格	IC SWITCHING CONTROLLER, Switching Regulator or Controller

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