H234 HSMC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 8

Technical content

MICROELECTRONICS CORP. Spec. No. : IC200915 Issued Date : 2009.08.12 Revised Date : Page No. : 1/8 H234 HSMC Product Specification H234 6-Lead Plastic SOT-23-6L（TSOP-6） Package Code: N

Description

The H234 is a highly integrated solution for a constant voltage/constant current mode SMPS application. The H234 contains one 1.21V voltage reference with ± 0.5% accuracy, one current sensing circuit and two operational amplifiers. Combining the voltage reference with one operational amplifier makes H234 an ideal voltage controller for use in adapters and battery chargers. T he other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing. The H234 is available in SOT-23-6L( TSOP-6 ) package. Features Applications

  • Constant Voltage and Constant Current Control · Adapters
  • Precision Internal Voltage Reference · Battery Chargers
  • Few External Components
  • Easy Compensation
  • Low Supply Current
  • Operating Temperature Range: -40 to 105 Pin Configuration Pin Number Pin Name Function

1 V CTRL Input pin of the voltage control loop

2 GND Ground

3 V OUT Output pin. Sinking current only

4 I CTRL Input pin of the current control loop

5 V SENSE Input pin of the current control loop

6 V CC Power supply

MICROELECTRONICS CORP. Spec. No. : IC200915 Issued Date : 2009.08.12 Revised Date : Page No. : 2/8 H234 HSMC Product Specification Functional Block Diagram V CC Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Power Supply Voltage VCC 20 V Input Voltage VIN -0.3 to VCC V Junction Temperature TJ 150 ℃ Storage Temperature TSTG -65 to 150 ℃ Package Thermal Resistance (Junction to Case) RθJC 92 ℃/W Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Symbol Min Max Unit Power Supply Voltage VCC 2.5 18 V Operating Temperature Range TA -40 105 ℃

MICROELECTRONICS CORP. Spec. No. : IC200915 Issued Date : 2009.08.12 Revised Date : Page No. : 3/8 H234 HSMC Product Specification

Electrical Characteristics

(VCC=5V, TA=25℃, unless otherwise specified.) Parameter Symbol Conditions Min Type Max Unit TOTAL CURRENT CONSUMPTION TA=25℃ 0.9 1.3 Total Supply Current Not Including the Output Sinking Current ICC -40℃<TA<105℃ 1.0 mA VOLTAGE CONTROL LOOP TA=25℃ 1 3.5 Transconduction Gain (V CTRL). Sink Current Only Gmv -40℃<TA< 105℃ 2.5 mA/mV TA=25℃ 1.204 1.21 1.216 Voltage Control Loop Reference VREF V TA=25℃ 50 Input Bias Current (VCTRL) I IBV -40℃<TA< 105℃ 100 nA CURRENT CONTROL LOOP Transconduction Gain (I CTRL). Sink Current Only Gmi T A=25℃ 1.5 7 mA/mV IOUT=2.5mA, TA=25℃ 67 70 73 Current Control Loop Reference VSENSE IOUT=2.5mA, -40℃<TA< 105℃ 66 70 74 mV TA=25℃ 25 Current Out of Pin ICTRL at 200mV IIBI -40℃<TA< 105℃ 50 µA OUTPUT STAGE Low Output Voltage at 10mA Sinking Current V OL TA=25℃ 200 mV TA=25℃ 27 50 Output Short Circuit Current. Output to V CC, Sink Current Only IOS -40℃<TA< 105℃ 35 mA

Figure 7. Typical Application 1 of H234

Figure 8. Typical Application 2 of H234

Figure 9. Typical Application 3 of H234

MICROELECTRONICS CORP. Spec. No. : IC200915 Issued Date : 2009.08.12 Revised Date : Page No. : 8/8 H234 HSMC Product Specification SOT-23-6L (TSOP-6) Dimension DIM Min. Max. A 2.70 3.12 B 2.60 3.00 C 1.40 1.80 D 0.30 0.55 E 0.00 0.10 F 0 ° 10° G 1.80 2.00 H - 1.30 I 0.10 0.21 J 0.30 0.60 K 0.6* L 0.95* M 0.25* N 1.00 1.20 *: Typical, Unit: mm SOT-23-6L(TSOP-6) Surface Mounted Package Marking: Pin Style: 1. Vctrl 2. GND 3. Vout 4.Ictrl 5. Vsense 6. Vcc Material:

  • Lead solder plating: Pure-Tin (Pb-free)
  • Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 Important Notice:
  • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of AVANTIC.
  • HSMC reserves the right to make changes to its products without notice.
  • HSMC semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
  • HSMC assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office: Tel: 886-2-25212056 Fax: 886-2-25632712, 25368454
  • A V ANTICS Microelectronics Corp: No. 255, Cai Lun Rd. Zhangjiang Technology Industrial Park Pudong, Shanghai, China Tel: 86-021-58955599 FH: 86-021-58558038