RT34063AGS 查看數據表（PDF） - Richtek Technology

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RT34063AGS

DC-to-DC Converter Control Circuits

Richtek Technology 

RT34063A

Absolute Maximum Ratings

z Power Supply Voltage ------------------------------------------------------------------------------------------------ 30V

z Feedback Input Voltage Range ------------------------------------------------------------------------------------- −0.3 to +30V

z Switch Collector Voltage --------------------------------------------------------------------------------------------- 30V

z Switch Emitter Voltage ----------------------------------------------------------------------------------------------- 30V

z Switch Collector to Emitter Voltage ------------------------------------------------------------------------------- 30V

z Driver Collector Voltage ---------------------------------------------------------------------------------------------- 30V

z Driver Collector Current (see Note) -------------------------------------------------------------------------------- 100mA

z Switch Current --------------------------------------------------------------------------------------------------------- 1.5A

z Power Dissipation, PD @ TA = 25°C

DIP-8 --------------------------------------------------------------------------------------------------------------------- 1.25W

SOP-8 -------------------------------------------------------------------------------------------------------------------- 0.625W

z Package Thermal Resistance

DIP-8, θJA --------------------------------------------------------------------------------------------------------------- 100°C/W

SOP-8, θJA -------------------------------------------------------------------------------------------------------------- 160°C/W

z Operating Junction Temperature ----------------------------------------------------------------------------------- +125°C

z Storage Temperature Range ---------------------------------------------------------------------------------------- 65 to +150°C

Note:Maximum package power dissipation limits must be observed.

Electrical Characteristics

(VCC = 5V, TA = 25°C, unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Units

Oscillator

Frequency

Charge Current

Discharge Current

Discharge to Charge Current Ratio

VPIN5 = 0V, CT = 1.0nF

ICHG 5.0V ≤ VCC ≤ 30V

IDISCHG 5.0V ≤ VCC ≤ 30V

Pin 7 to VCC

26 38 48 kHz

25 36 43 μA

160 250 290 μA

5.5 6.9 7.9 --

Current Limit Sense Voltage

Output Switch

VLIMIT ICHG = IDISCHG

280 330 380 mV

Saturation Voltage, Darlington Connection

ISW = 1.0A, Pins1, 8 connected -- 1.0 1.3 V

Saturation Voltage, Darlington Connection

ISW = 1.0A, RPIN8 = 82Ω to

VCC, Forced β ≅ 20

-- 0.45 0.7 V

DC Current Gain

Collector Off-state Current

Comparator

ISW = 1.0A, VCE = 5.0V

VCE = 30V

50 75 -- --

-- 0.01 100 μA

Threshold Voltage

1.225 1.25 1.275 V

Threshold Voltage Line Regulation

3.0V ≤ VCC ≤ 30V

-- 1.4 5.0 mV

Input Bias Current

Total Device

IBIAS VIN = 0V

-- -20 -400 nA

Supply Current

VCC = 5.0V to 30V, CT = 1.0nF,

ICC

Pin7 = VCC, VPIN5 > VTH, Pin2 -- 3.0 4.5 mA

= GND, Remaining pins open

DS34063A-13 March 2007

www.richtek.com

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