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| CM2835 300mA CMOS LDO GENERAL DESCRIPTION The CM2835 family is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30A typ.), low dropout voltage, and high output voltage accuracy, making them ideal for battery applications. EN input connected to CMOS has low bias current. The space-saving SOT-23 and SOT-89 package is attractive for "Pocket" and "Hand Held" applications. These rugged devices have both Thermal Shutdown, and Current limit to prevent device failure under the "Worst" of operating conditions. The CM2835 is stable with a Low ESR output capacitance of 1.0F or greater. FEATURES Very Low Dropout Voltage Low Current Consumption: Typ. 30A, Max. 35A Output Voltage: 1.8V, 2.5V, 3.0V, and 3.3V High Accuracy Output Voltage: +/- 1.5% Guaranteed 300mA Output Input Range up to 7.0V Thermal Shutdown Current Limiting Stability with Low ESR Capacitors Compact Package: SOT-23, SOT-89 Factory Pre-set Output Voltages Low Temperature Coefficient APPLICATIONS Battery-powered devices Personal communication devices Home electric/electronic appliances PC peripherals TYPICAL APPLICATIONS CM2835 IN IN GND OUT OUT 5V C1 1uF C2 1.0uF 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 1 CM2835 300mA CMOS LDO PIN CONFIGURATION SOT-23 Top View SOT-89 Top View 3 VIN VOUT 1 2 2 OUT GND BLOCK DIAGRAM IN Overcurrent Shutdown Thermal Shutdown + Vref = 1.176V AMP 2006/01/23 Rev1.2 Champion Microelectronic Corporation 1 R1 R2 3 VOUT GND GND VIN Page 2 CM2835 300mA CMOS LDO ORDERING INFORMATION Part Number CM2835DIM23 CM2835DIM89 CM2835KIM23 CM2835KIM89 CM2835PIM23 CM2835PIM89 CM2835SIM23 CM2835SIM89 CM2835GDIM23 CM2835GDIM89 CM2835GKIM23 CM2835GKIM89 CM2835GNIM23 CM2835GNIM89 CM2835GPIM23 CM2835GPIM89 CM2835GSIM23 CM2835GSIM89 Output Voltage 1.8V 1.8V 2.5V 2.5V 3.0V 3.0V 3.3V 3.3V 1.8V 1.8V 2.5V 2.5V 2.8V 2.8V 3.0V 3.0V 3.3V 3.3V Temperature Range -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 -40 ~ +85 Package SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 Note: For other pre-set output voltage requirements, please contact Champion Sales office. ABSOLUTE MAXIMUM RATINGS Input Voltage Output Current Output Voltage .................................................. +7V ............................... PD / (VIN - Vo) mA ........................ GND-0.3V to VIN+0.3V OPERATING RATINGS Ambient Temperature Range (TA) ......... -40 to +85 Junction Temperature Range ............. -40 to +150 ESD Classification ................................................ B THERMAL INFORMATION Parameter Thermal Resistance (jc) Thermal Resistance (ja) SOT-23 SOT-89 SOT-23 SOT-89 SOT-23 SOT-89 Maximum 170 100 330 300 225 400 150 300 Unit /W /W mW Internal Power Dissipation (PD) (T = 100) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) *With Junction sink capable of twice times ofjc Caution: Stress above the listed absolute rating may cause permanent damage to the device. 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 3 CM2835 300mA CMOS LDO ELECTRICAL CHARACTERISTICS TA = +25; unless otherwise noted CM2835 Min. Note 1 IO = 1mA to 300mA IO = 300mA, VOUT=VO(NOM)-1.5%, 1.2V Parameter Input Voltage Output Voltage Accuracy Dropout Voltage Output Current Current Limit Quiescent Current Ground Pin Current Line Regulation Load Regulation Over Temperature Shutdown Over Temperature Hysteresis VOUT Temperature Coefficient Power Supply Rejection Symbol VIN VOUT VDROPOUT IO ILIM IQ IGND REGLINE REGLOAD OTS OTH TC Test Conditions Typ. Max. 7 1.5 1300 800 300 Unit V % mV mA mA -1.5 VOUT > 1.2V VOUT > 1.2V IO = 0mA IO = 1mA to 300mA IOUT=5mA, VIN=VOUT+1 to VOUT+2 IO=1mA to 300mA 35 50 0.1 1 A A % % ppm/ dB f=1kHz f=10kHz f=100kHz f=1kHz f=10kHz f=100kHz CO=2.2F CO=100F CO=2.2F CO=100F 60 50 40 75 55 30 30 20 30 20 Vrms Vrms dB PSRR eN eN f=10Hz to 100kHz IO = 10mA, CBYP=0F f=10Hz to 100kHz IO = 10mA, CBYP=0.01F 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 4 CM2835 300mA CMOS LDO DETAILED DESCRIPTION The CM2835 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown. The P-channel pass transistor receives data from the error amplifier, over-current protection, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120. The CM2835 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. EXTERNAL CAPACITOR The CM2835 is stable with a Low ESR output capacitor to ground of 1.0F or greater. It can keep stable even with higher ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be larger than 0.1F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "quiet" ground termination is desirable. TYPICAL CHARACTERISTICS 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 5 CM2835 300mA CMOS LDO 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 6 CM2835 300mA CMOS LDO PACKAGE DIMENSION SOT-23 (M23) D 3 b1 c1 With Plating A c A1 A2 E1 b Base Metal Section B-B E b b1 c c1 D E 1 e e1 2 E1 b L L1 e e1 1 1 2 A2 A 2 A1 See Section B-B SOT-89 (M89) D D1 1.0 E H L L1 L 5 C e e1 8 A L b b1 C D D1 H E e1 b b1 b e 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 7 CM2835 300mA CMOS LDO NUMBERING SCHEME Ordering Number: CM2835XYZ (note1) Ordering Number: CM2835GXYZ (note2) note1: CM2835: 300mA CMOS LDO with enable X : Suffix for voltage output (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note2: CM2835: 300mA CMOS LDO with enable G : Suffix for Pb Free Product X : Suffix for voltage output (note 3) Y : Suffix for Temperature Range (note 4) Z : Suffix for Package Type (note 5) note 3: see CMOS LDO Voltage Suffix Table CM2835 will provide options of D(1.8V), K(2.5V), P(3.0V), S(3.3V) note 4: Y= I : -40~+85 (only I grade support for all CMOS LDOs) note 5: Z is single alphabet with or without digits M23 : SOT-23 (TR only) M89 : SOT-89 (TR only) CMOS LDO Voltage Suffix Table Output Voltage 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.9V Suffix A B C D E F G H I J K L M N O Output Voltage 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V Suffix P Q R S T U V W X Y Z 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 8 CM2835 300mA CMOS LDO IMPORTANT NOTICE Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. HsinChu Headquarter 5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan T E L : +886-3-567 9979 F A X : +886-3-567 9909 Sales & Marketing 11F, No. 306-3, SEC. 1, Ta Tung Road, Hsichih, Taipei Hsien 221, Taiwan T E L : +886-2-8692 1591 F A X : +886-2-8692 1596 2006/01/23 Rev1.2 Champion Microelectronic Corporation Page 9 |
Price & Availability of CM2835SIM89
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