SP6201

® SP6200/6201 Micropower, 100mA and 200mA CMOS LDO Regulators FEATURES ■ Tiny DFN Package (2mmX3mm) ■ Low Dropout Voltage: 160mV @ 100mA ■ High Output Voltage Accuracy: 2% ■ Ultra Low Shutdown Current: 1µA Max ■ Ultra Low GND Current: • 200µA @ 200mA Load • 28µA @ 100µA Load ■ Extremely Tight Load and Line Regulation ■ Current and Thermal Limiting ■ RESET Output (VOUT good) ■ Logic-Controlled Electronic Enable ■ Unconditionally Stable with 1µF Ceramic ■ Fixed Outputs: • 1.5V, 1.8V, 2.5V, 2.7V, 2.85V, 3.0V, 3.3V, 3.5V, 5V ■ Adjustable Output Available NC 1 VIN 2 VOUT 3 NC 4 8 EN SP6201 8 Pin DFN 7 GND 6 NC 5 RESET Now Available in Lead Free Packaging APPLICATIONS ■ Cellular Telephones ■ Laptop, Notebooks and Palmtop Computers ■ Battery-Powered Equipment ■ Consumer/ Personal Electronics ■ SMPS Post-Regulator ■ DC-to-DC Modules ■ Medical Devices ■ Data Cable ■ Pagers DESCRIPTION The SP6200 and SP6201 are CMOS LDOs designed to meet a broad range of applications that require accuracy, speed and ease of use. These LDOs offer extremely low quiescent current which only increases slightly under load, thus providing advantages in ground current performance over bipolar LDOs. The LDOs handle an extremely wide load range and guarantee stability with a 1µF ceramic output capacitor. They have excellent low frequency PSRR, not found in other CMOS LDOs and thus offer exceptional Line Regulation. High frequency PSRR is better than 40dB up to 400kHz. Load Regulation is excellent and temperature stability is comparable to bipolar LDOs. An enable feature is provided on all versions. The SP6200/6201 is available in fixed and adjustable output voltage versions in tiny DFN and small SOT-23-5 packages. A VOUT good indicator is provided on all fixed output versions. TYPICAL APPLICATION CIRCUIT Fixed Output Voltage 470kΩ VIN 1 CIN = 1µF 2 Enable Shutdown 5 VOUT COUT = 1µF SP6200 SP6201 4 3 EN EN (pin 3) may be connected directly to IN (pin 1). RSN (VOUT good) Date:5/25/04 SP6200/6201 100/200mA CMOS LDO Regulator © Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS, NOTE 1 These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Supply Input Voltage (VIN) ............................. -2V to 7V Output Voltage (VOUT) ......................... -0.6 to (VIN +1V) Enable Input Voltage (VEN) ............................ -2V to 7V Power Dissipation (PD) .......... Internally Limited, Note 3 Lead Temperature (soldering 5s) ....................... 260°C Storage Temperature ........................ -65˚C to +150˚C OPERATING RATINGS, NOTE 2 Input Voltage (VIN)..................................+2.5V to +6V Enable Input Voltage (VEN)..........................0V to +6V Junction Temperature (TJ)................-40˚C to +125˚C Thermal Resistance (See Note 3): SOT-23-5 (θJA)...................................................90˚C/W 8 Pin DFN (θJA)............................................ .....59˚C/W (See Note 3) ELECTRICAL CHARACTERISTICS VIN = VOUT +1V, VO = 5V for ADJ, IL = 100µA, CIN = 1.0µF, COUT = 1.0µF, TJ = 25°C , unless otherwise specified. The ♦ denotes the specifications which apply over the full operating temperature range, unless otherwise specified. PARAMETER Output Voltage Accuracy, (VO) Reference Voltage Output Voltage Temperature Coefficient, Note 4, (∆VO/∆T) Minimum Supply Voltage MIN -2 -3 1.213 TYP MAX 2 3 UNIT % % V ppm/ °C ♦ ♦ ♦ CONDITIONS Variation from specified VOUT Adjustable version only 1.250 60 2.50 2.55 2.70 3.00 0.03 0.07 0.14 0.3 0.3 0.2 70 160 320 1.287 2.70 2.80 2.95 3.50 0.2 0.25 0.50 1 1 4 7 120 160 250 300 400 500 1 40 45 200 250 400 500 V V V V %/ V % % % % mV mV mV mV mV mV mV mV µA µA µA µA µA µA µA dB ♦ ♦ ♦ ♦ IL = 100µA IL = 50mA IL = 100mA IC = 200mA VIN = (VOUT + 1V) to 6V IL = 0.1mA to 100mA, SP6200 IL = 0.1mA to 200mA, SP6201 IL = 0.1mA to 100mA, VIN = 2.95V IL = 0.1mA to 200mA, VIN = 3.5V IL = 100µA IL = 50mA ♦ IL = 100mA ♦ IL = 200mA, SP6201 Only ♦ ♦ ♦ ♦ ♦ VEN ≥2.0V, IL = 100mA, SP6200 only (for 1.5 & 1.8, VIN = 2.95) VEN ≥2.0V, IL = 200mA, SP6201 Only (for 1.5 & 1.8, VIN = 3.5) Frequency =100Hz, IL =10mA Frequency = 400Hz, IL=10mA ♦ ♦ SP6200 SP6201 Turns On Turns Off VEN ≥ 0.4V VEN ≥ 2.0V, IL = 100µA Line Regulation, (∆VO/ VIN) Load Regulation, Note 5, (∆VO / VO) SP6200-1.5V & 1.8 Load Regulation SP6201-1.5V & 1.8 Load Regulation Dropout Voltage, Note 6, (VIN – VO) (Not applicable to voltage options below 2.7V) Shutdown Quiescent Current, (IGND) Ground Pin Current, Note 7, (IGND) 0.01 28 110 200 Power Supply Rejection Ratio, (PSRR) Current Limit, (ICL) Thermal Limit 100 300 78 40 140 420 162 147 200 600 mA mA °C °C Date:5/25/04 SP6200/6201 100/200mA CMOS LDO Regulator © Copyright 2004 Sipex Corporation 2 ELECTRICAL CHARACTERISTICS: Continued VIN = VOUT +1V, VO = 5V for ADJ, IL = 100µA, CIN = 1.0µF, COUT = 1.0µF, TJ = 25°C , unless otherwise specified. The ♦ denotes the specifications which apply over the full operating temperature range, unless otherwise specified. PARAMETER Thermal Regulation, Note 8, (∆VO/∆PD) Output Noise, (e no) MIN TYP 0.05 MAX UNITS %/W ♦ CONDITIONS 150 ENABLE INPUT Enable Input Logic-Low Voltage, (VIL) Enable Input Logic-High Voltage, (VIH) Enable Input Current, (IIL), (IIH) Reset Not Output -2 1.6 0.01 0.01 -4 1 1 -6 0.4 µVrms IL = 50mA, CL = 1µF 0.1µF from VOUT to Adj. 10Hz to 100kHz ♦ ♦ ♦ ♦ Regulator Shutdown Regulator Enabled VIL < 0.4V VIH > 2.0V Threshold V V µA µA % Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. The maximum allowable power dissipation at any TA (ambient temperature) is PD (MAX) = (TJ (MAX) – TA) / θϑA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The θJA of the SP6200/6201 (all versions) is 90°C/W for the SOT-23-5 and 59°C/W for the DFN package on a standard 4 layer board (see “Thermal Considerations” section for further details). Note 4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 5. Load Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range; from 0.1mA to 100mA, SP6200; from 0.1mA to 200mA, SP6201. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Not applicable to output voltages less than 2.5V. Note 6. Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Not applicable to output voltages less than 2.7V. Note 7. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current. Note 8. Thermal regulation is defined as the change in output voltage at a time ”t” after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 100mA load pulse at VIN = 6V for t = 10ms. Date:5/25/04 SP6200/6201 100/200mA CMOS LDO Regulator © Copyright 2004 Sipex Corporation 3 VIN Current Limit and Thermal Shutdown OUT VOUT C OUT Enable VREF Bandgap REF 1.25V R2 - + R PULL R1 RSN 1.20V RESET GND Figure 1. Fixed Voltage Regulator VIN IN OUT VOUT C OUT Enable EN VREF Bandgap REF 1.25V + Current Limit and Thermal Shutdown R2 C BYP (option) ADJ R1 RSN 1.20V VOUT = V REF R2 +1 R1 GND Figure 2. Adjustable Voltage Regulator Date:5/25/04 SP6200/6201 100/200mA CMOS LDO Regulator © Copyright 2004 Sipex Corporation 4 PIN DESCRIPTION PIN NUMBER 1 2 3 4 4 5 NAME IN GND EN RSN (Reset Not) ADJ OUT FUNCTION Supply Input Ground Enable/Shutdown (Input): CMOS or TTL compatible input. Logic high = enable, logic low = shutdown Open drain indicating that VOUT is good Adjustable (Input): Adjustable regulator feedback input. Connect resistor voltage divider. Regulator Output PIN NUMBER 1 2 3 4 5 6 7 8 NAME NC VIN VOUT NC RSN NC GND EN (8 Pin DFN) FUNCTION No Connect Supply Input Regulator Input No Connect Open drain indicating that VOUT is good No Connect Ground Enable/Shutdown (Input): CMOS or TTL compatible input. Logic high = enable, logic low = shutdown Date:5/25/04 SP6200/6201 100/200mA CMOS LDO Regulator © Copyright 2004 Sipex Corporation 5 THEORY OF OPERATION General Overview The SP6200 and SP6201 are CMOS LDOs designed to meet a broad range of applications that require accuracy, speed and ease of use. These LDOs offer extremely low quiescent current which only increases slightly under load, thus providing advantages in ground current performance over bipolar LDOs. The LDOs handle an extremely wide load range and guarantee stability with a 1µF ceramic output capacitor. They have excellent low frequency PSRR, not found in other CMOS LDOs and thus offer exceptional Line Regulation. High frequency PSRR is better than 40dB up to 400kHz. Load Regulation is excellent and temperature stability is comparable to bipolar LDOs. Thus, overall system accuracy is maintained under all DC and AC conditions. Enable feature is provided on all versions. A Vout good indicator (RSN pin) is provided in all the fixed output voltage devices. An adjustable output version is also available. Current Limit and Thermal protection is provided internally and is well controlled. Architecture The SP6200 and SP6201 are only different in their current limit threshold. The SP6200 has a current limit of 140mA, while the SP6201 current limit is 420mA. The SP6201 can provide pulsed load current of 300mA. The LDOs have a two stage amplifier which handles an extremely wide load range (10µA to 300mA) and guarantees stability with a 1µF ceramic load capacitor. The LDO amplifier has excellent gain and thus touts PSRR performance not found in other CMOS LDOs. The amplifier guarantees no overshoot on power up or while enabled through the EN pin. The amplifier also contains an active pull down, so that when the load is removed quickly the output voltage transient is minimal; thus output deviation due to load transient is small and fairly well matched when connecting and disconnecting the load. An accurate 1.250V bandgap reference is bootstrapped to the output in fixed output versions of 2.7V and higher. This increases both the low frequency and high frequency PSRR. The adjustable version also has the bandgap reference bootstrapped to the output, thus the lowest externally programmable output voltage is 2.7V. The 2.5V fixed output version has the bandgap always connected to the Vin pin. Unlike many LDOs, the bandgap reference is not brought out for filtering by the user. This tradeoff was maid to maintain good PSRR at high frequency (PSRR can be degraded in a system due to switching noise coupling into this pin). Also, often leakages of the bypass capacitor or other components cause an error on this high impedance bandgap node. Thus, this tradeoff has been made with "ease of use" in mind. Protection Current limit behavior is very well controlled, providing less than 10% variation in the current limit threshold over the entire temperature range for both SP6200 and SP6201. The SP6200 has a current limit of 140mA, while the SP6201 has a current limit of 420mA. Thermal shutdown activates at 162°C and deactivates at 147°C. Thermal shutdown is very repeatable with only a 2 to 3 degree variation from device to device. Thermal shutdown changes by only 1 to 2 degrees with Vin change from 4V to 7V. Enable (Shutdown Not) Input The LDOs are turned off by pulling the EN pin low and turned on by pulling it high. If it is not necessary to shut down the LDO, the EN (pin 3) should be tied to IN (pin 1) to keep the regulator output on at all time. The enable threshold is 0.9V and does not change more than 100mV over the entire temperature and Vin voltage range. The lot to lot variations in Enable Threshold is also within 100mV. Shutdown current is guaranteed to be