ST1L04 LOW QUIESCENT CURRENT VOLTAGE REGULATOR ■ ■ ■ ■ ■ ■ ■ ■ ■ ADJUSTABLE OUTPUT VOLTAGE FROM 0.8V to VI -Vd INTERNAL REFERENCE VOLTAGE ACCURACY ± 2% AT 25°C OUTPUT CURRENT CAPABILITY: 1A MINIMUM VERY LOW QUIESCENT CURRENT: MAX 3mA OVER TEMPERATURE RANGE MAXIMUM DROPOUT 1V (@ IO=1A) STABLE ONLY WITH LOW ESR CERAMIC CAPACITORS THERMAL SHUTDOWN PROTECTION WITH HYSTERESIS OVER CURRENT PROTECTION OPERATING JUNCTION TEMPERATURE RANGE: FROM 0 TO 125°C DESCRIPTION The ST1L04 is a low drop adjustable linear voltage regulator capable to supply up to 1A output current. The output voltage can be as low as 0.8V. The quiescent current is well controlled and maintained below 3mA over the whole allowed PPAK junction temperature range. The ST1L04 is stable only with low ESR output ceramic capacitors. Internal protection circuitry includes thermal protection with hysteresis and over current limiting. The ST1L04 is especially suitable for applications requiring low voltage outputs from low voltage inputs. Typical application for this product are, notebook PCs, low voltage ASIC, VID power supplies and low cost post regulation for 3.3V output voltage switching regulators. Figure 1: Schematic Diagram February 2005 Rev. 1 1/11 ST1L04 Table 1: Order Codes TYPE PPAK ST1L04 ST1L04PT Figure 2: Pin Connection (top view) Table 2: Pin Description PIN N° NAME 1 VI 2 3 4 5 N.C. GND ADJ VO FUNCTION Supply voltage input pin. Bypass with a ceramic capacitor to GND Not connected. Ground. The exposed metallic pad of the package is connected to GND. Adjust voltage pin. External resistor divider connection. Output voltage pin. Bypass with a ceramic capacitor to GND Table 3: Absolute Maximum Ratings Symbol Parameter Value Unit VI DC Supply Voltage from GND-0.3 to 10 V Ptot Power Dissipation internally limited W IO Output Current internally limited A Top Operating Junction Temperature Range Tstg Storage Temperature Range 0 to +125 °C -40 to +150 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 4: Thermal Data Symbol Parameter Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient 2/11 PPAK Unit 8 °C/W 100 °C/W ST1L04 Figure 3: Typical Application Schematic NOTE: The adjustable output voltage is set by a resistor divider connected between VO and GND with its centre tap connected to ADJ. The voltage divider resistor are: R1 connected between VO and ADJ and R2 connected between ADJ and GND. VO is determined by VREF, R1, R2, IADJ, as follows: VO=VREF(1+R1/R2)+IADJR1 Since IADJ is very small and stable it can be ignored and the output voltage can be simply calculated as follows: VO=VREF(1+R1/R2) Table 5: Electrical Characteristics (refer to the typical application schematic, VIN=from 2.9 to 5.5V, IO= from 10mA to 1A, CIN=4.7µF, COUT=4.7µF, Tj =0 to 125°C, unless otherwise specified). Typical values are intended at Tj=25°C unless otherwise specified Symbol Parameter Test Conditions Min. Typ. Max. Unit 3 mA 0.816 0.824 0.8 V VI Operating Input Voltage Id Quiescent Current VREF Reference Voltage TJ = 25°C ∆VO Line Regulation IO = 10mA ∆VO Load Regulation VI = 3.3V IADJ Adjustment Current IO = 10mA I∆ADJ Adjustment Current change 200 nA IOmin Minimum Output Current for regulation Output Current Limit 100 µA IO Vd SVR CO CESR Dropout Voltage (see note 1 and note 2) Supply Voltage Rejection (see note 2) 2.8 0.784 0.776 0.8 0.8 1 IO = 1A, VO = from 1.8 to 3.3V VI = 3.3±0.5V, IO=10mA, TJ = 25°C f=120Hz f=100kHz Ceramic Output capacitor value % 0.8 % 1 µA 1.4 A 1 V 50 20 dB 2.2 µF Output Capacitor ESR value 200 mΩ 0.003 %VO VI=3.3V 165 °C VI=3.3V 5 °C eN Output Noise Voltage (see note 2) B = from 10Hz to 10kHz, VI = 3.3V, IO=10mA, Tj=25°C TSH Thermal shutdown trip point (see note 2) Thermal Shutdown hysteresis (see note 2) THY V NOTE 1: This parameter is the minimum input to output differential voltage required to maintain 1% regulation with respect to the VO nominal value. For VO between 0.8V and 1.8V included, the Vd value is overridden by the minimum operating input voltage. NOTE 2: Guaranteed by design. Not tested in production. 3/11 ST1L04 TYPICAL CHARACTERISTICS Figure 4: Output Voltage vs Temperature Figure 7: Load Regulation vs Temperature Figure 5: Output Voltage vs Temperature Figure 8: Quiescent Current vs Temperature Figure 6: Line Regulation vs Temperature Figure 9: Quiescent Current vs Temperature 4/11 ST1L04 Figure 10: Quiescent Current vs Output Current Figure 13: Dropout Voltage vs Output Current Figure 11: Quiescent Current vs Input Voltage Figure 14: Supply Ripple Rejection vs Temperature Figure 12: Dropout Voltage vs Temperature Figure 15: Supply Ripple Rejection vs Temperature 5/11 ST1L04 Figure 16: Supply Ripple Rejection vs Output Current Figure 19: Adjustment Current change vs Temperature Figure 17: Supply Ripple Rejection vs Frequency Figure 20: Minimum Output Current for Regulation vs Temperature Figure 18: Adjustment Current vs Temperature Figure 21: Minimum Output Current for Regulation vs Temperature 6/11 ST1L04 Figure 22: Load Transient Figure 23: Line Transient VI=4V, I O=10mA to 1A, CO=4.7µF, CI=4.7µF, TJ=25°C VI=3V to 5V, IO=250mA, NO CI, T J=25°C, tRISE =tFALL=3µs 7/11 ST1L04 PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.4 0.6 0.015 0.023 B2 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.023 C2 0.48 0.6 0.019 0.023 D 6 6.2 0.236 D1 E 5.1 6.4 0.244 0.201 6.6 0.252 0.260 E1 4.7 0.185 e 1.27 0.050 G 4.9 G1 2.38 2.7 0.093 0.106 H 9.35 10.1 0.368 0.397 L2 0.8 L4 0.6 L5 1 L6 5.25 1 1 2.8 0.193 0.206 0.031 0.023 0.039 0.039 0.039 0.110 0078180-E 8/11 ST1L04 Tape & Reel DPAK-PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 22.4 0.519 0.882 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 9/11 ST1L04 Table 6: Revision History Date Revision 10-Feb-2005 1 10/11 Description of Changes First Release. ST1L04 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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