DatasheetsPDF.com

OCP2030 Dataheets PDF



Part Number OCP2030
Manufacturers ORIENT-CHIP
Logo ORIENT-CHIP
Description SWITCHING BUCK REGULATOR
Datasheet OCP2030 DatasheetOCP2030 Datasheet (PDF)

OCP2030 SWITCHING BUCK REGULATOR „ General Description The OCP2030 is a buck topology of switching regulator for wide operating voltage applications field. The OCP2030 includes a high current P-MOSFET, high precision reference (0.5V) for comparing output voltage with feedback amplifier, an internal dead-time control and oscillator for controlling the maximum duty cycle and PWM frequency, and has power-on programmable soft start time and short circuit PMOS turn-off and auto re-start protection f.

  OCP2030   OCP2030


Document
OCP2030 SWITCHING BUCK REGULATOR „ General Description The OCP2030 is a buck topology of switching regulator for wide operating voltage applications field. The OCP2030 includes a high current P-MOSFET, high precision reference (0.5V) for comparing output voltage with feedback amplifier, an internal dead-time control and oscillator for controlling the maximum duty cycle and PWM frequency, and has power-on programmable soft start time and short circuit PMOS turn-off and auto re-start protection functions. „ Features z Precision feedback reference voltage: 0.5V (2%) z Wide supply voltage operating range: 3.0 to 20V z Low current consumption: 5.5mA z Internal fixed oscillator frequency: Typ. 500KHz z Programmable Soft-Start function (SS) z Short Circuit Shutdown and Auto Re-start function(ARSCP) z Built-in P-MOSFET for 3A loading capability z Package: SOP8 „ Typical Application Circuit Vin + 1 VCC LX 8 LX 7 OCP2030 IN- 3 2 SCP FB GND GND 4 56 Vout + „ Pin Configuration Top View 18 27 3 OCP2030 6 45 Name VCC SS/SCP INFB GND LX No. Status 1P 2I 3I 4O 5 6 P 7 8 O Description IC Power Supply (PMOS Source) Connecting with a Soft-start & ARSCP timing capacitor Error Amplifier Inverting Input Error Amplifier Compensation Output IC Ground PMOS High Current Output www.micro-bridge.com Page1 - 8 Rev. 1.0 Jan 09, 2007 „ Block Diagram 1 Reference Regulator 1.25V Oscillator 3 0.5V 4 36KΩ 500Ω 0.7V Soft start&Auto Re-start S.C.P Circuits OCP2030 SWITCHING BUCK REGULATOR Thermal Shuntdown Output drive control circuits 56 2 78 „ Absolute Maximum Ratings Power supply voltage Output source current Error amplifier inverting input Allowable dissipation SOP8 Ta≦+25℃ Operating temperature Storage temperature SOP8 Lead Temperature (soldering, 10 sec) +20V +3A -0.3V~+1.2V 650mW -10℃∼+85℃ -55℃∼+125℃ +260℃ „ DC Electrical Characteristics Electrical characteristics over recommended operating free-air temperature range, VCC=6V, (unless otherwise noted) Reference Parameter Output voltage Input regulation Output voltage change with temperature Symbol VREF ∆VREF ∆VREF/VREF Test Conditions COMP connected to FB Vcc=3.0V to 20V TA=-10℃ to 25℃ TA=25℃ to 85℃ Min. 0.490 Typ. 0.5 2 1 1 Max. 0.510 12.5 2 2 Unit V mV % Soft Start (S.S.) Parameter S.S. Source current Soft start threshold voltage Symbol ISS VSST Test Conditions VSS= 0V - Min. -15 0.8 Typ. -10 0.9 Max. -7 1.0 Unit µA V www.micro-bridge.com Page2 - 8 Rev. 1.0 Jan 09, 2007 OCP2030 SWITCHING BUCK REGULATOR „ DC Electrical Characteristics (Continuous) Short-circuit protection (S.C.P.) Parameter S.C.P source current SCP re-start/hold time S.C.P threshold voltage Symbol ISCP TRS/THOLD VSCP VSB Test Conditions VSCP=0V VCOMP>0.8V VFB>450mV VFB<450mV Min. -15 0.9 Typ. -10 1/20 1.0 0.1 Max. -7 1.1 0.15 Unit µA - V Oscillator Parameter Frequency Frequency change with voltage Frequency change with temperature Symbol f ∆f/∆V ∆f/∆T Test Conditions Vcc=3.0 V to 20V TA=--10℃ to 85℃ Min. 400 - Typ. 500 5 5 Max. 600 - Unit KHz % % Error amplifier Parameter Input threshold voltage VTchange with voltage VTchange with temperature Input bias current Voltage Gain Frequency bandwidth Output voltage Positive Swing Negative Output source current Output sink current Symbol VIN∆VIN-/ ∆V ∆VIN-/ ∆T IB Av BW VPOS VNEG ISOURCE ISINK Test Conditions VFB=450mV VCC=3V to 20V Ta = -10℃to 85℃ -- -Av=0 dB VIN-=0.3V VIN-=0.7V VFB=450mV Min. 490 - - -1.0 0.78 - - 30 Typ. 500 5 1 -0.2 100 6 0.87 0.05 -45 45 Max. 510 20 - 1.0 - 0.2 -30 - Unit mV mV % µA V/V MHz V µA µA Idle Period Adjustment Parameter Maximum duty cycle Symbol TDUTY Test Conditions VIN- =0.2V Min. Typ, Max. Unit - 80 - % Output Parameter PMOS D-S voltage PMOS source current PMOS On resistance Output leakage current Total device Parameter Standby supply current Symbol VDSS ID RDS(ON) IL Test Conditions VFB=0.1V VCC=5.0V, VIN-=0V VCC=10V, VIN-=0V SCP active Min. Typ, -25 -2 70 42 5 Max. - 90 65 - Unit V A mΩ µA Symbol ISTANDBY Test Conditions Min. - Typ. 4.5 Max. 6 Unit mA www.micro-bridge.com Page3 - 8 Rev. 1.0 Jan 09, 2007 „ Typical Characteristics Reference Output Voltage(V) 0.509 0.508 0.507 0.506 0.505 0.504 0.503 0.502 0.501 3.6 Power Supply Voltage VS. Reference Output Voltage 6 10 12 15 17 20 Power Supply Voltage (V) Figure 1 595 590 585 580 575 570 565 560 555 550 545 540 3.6 Power Supply Voltage VS. Oscillator Frequency 6 10 12 15 17 Power Supply Voltage (V) 20 Figure 3 Oscillator Frequency(KHz) Reference Output Voltage(V) Oscillator Frequency(KHz) OCP2030 SWITCHING BUCK REGULATOR Tempetature VS. Reference Output Voltage 0.507 0.506 0.505 0.504 0.503 0.502 0.501 0.500 0.499 0.498 -25 25 50 75 100 120 Tempetature(°C) Figure 2 700 650 600 550 500 450 400 350 300 250 200-25 Tempetature VS. Oscillator Frequency 25 50 75 100 120 Tempetature(°C) Figure 4 www.micro-bridge.com Page4 - 8 Rev. 1.0 Jan 09, 2007 Effcienc.


NMH4815SC OCP2030 IRFPC50A


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)