MAS9122 ETC1 | Alldatasheet

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Technical content

DA9122.002

7 September, 2001

1 (12) MAS9122

3 Outputs LDO Voltage Regulator IC

  • Three Low Dropout Voltage Regulators
  • Very Low Noise: 25 µVrms
  • High Ripple Rejection: 63 dB
  • Very Low Crosstalk
  • Low Ground Pin Current
  • Regulator Enable/Disable Control

DESCRIPTION

MAS9122 is a three output voltage regulator. It is designed for three different output voltages, which can be modified through a mask option. Regulators operating mode is controlled by two enable/disable pins. The circuit consists of a bandgap voltage reference, an error amplifier, a current limit circuit and a thermal protection circuit. MAS9122 features very low ground pin current: typically less than 1.5 µA sleep mode current and typical 125 µA for one regulator in active mode. Excellent noise and PSRR performance enables the use of MAS9122 in high precision portable devices. Low crosstalk between regulators provides an area efficient solution compared to single regulators. FEATURES APPLICATION

  • Three Regulators at 135 mA, 70 mA and 50 mA
  • Output Options 2.70, 2.85 and 3.00 V, see Ordering Information p. 12
  • Low Noise: 20 µVrms Typical and 30 µVrms Maximum for All Regulators over Frequency Range 100 Hz…100 kHz
  • Fast Dynamic Response
  • Output Voltage Accuracy < ±2.0 %
  • MSOP-8 Package
  • Systems Requiring Stabilized Power in Separate Blocks
  • Cordless Phones
  • Mobile Phones
  • Portable Systems
  • Battery Powered Systems BLOCK DIAGRAM LDO_A LDO_B LDO_C 135 mA 70 mA 50 mA OUT A OUT B OUT C VREF Bandgap Reference Temperature Protection OR- gate ENA ENBC VIN GND

DA9122.002 2 (12) PIN CONFIGURATION Top Marking Information: AX = voltage version, see p.12 Ordering information WW = week PIN DESCRIPTION Pin Name Pin Type Function OUTA 1 O 135 mA Regulator Output OUTC 2 O 50 mA Regulator Output ENBC 3 I Enable for Regulators B and C ENA 4 I Enable for Regulator A VREF 5 O Reference Voltage: Pin for Bypass Capacitor GND 6 P Ground VIN 7 P Positive Supply Voltage OUTB 8 O 70 mA Regulator Output OUTA 1 OUTC 2 ENBC 3 ENA 4

8 OUTB

7 VIN

6 GND

5 VRF

W Top View G = Ground, I = Input, O = Output, P = Power

DA9122.002 3 (12) ABSOLUTE MAXIMUM RATINGS All Voltages with Respect to Ground Parameter Symbol Conditions Min Max Unit Supply Voltage V IN −0.3 6V Voltage Range for All Pins −0.3 VIN + 0.3 V ESD Rating HBM 2 kV Junction Temperature T Jmax 175 (limited) oC Storage Temperature T S −55 +150 oC Stresses beyond those listed may cause permanent damage to the device. The device may not operate under these conditions, but will not be destroyed. Parameter Symbol Conditions Min Max Unit Supply Voltage V IN VOUT(NOM) + 0.25 5.3 V Operating Junction Temperature TJ −40 +125 ° C Operating Ambient Temperature TA −40 +85 °C

ELECTRICAL CHARACTERISTICS

TA = -40°C to +85°C, typical values at TA = +27°C, VIN = 4.5 V, IOUT = 1.0 mA, CIN = 1.0 µF, CL = 1.0 µF, CBYPASS = 10 nF, VCTRL = 2.0 V, unless otherwise specified. N Thermal Protection Parameter Symbol Conditions Min Typ Max Unit Threshold High T H 130 150 170 oC Threshold Low T L 120 140 160 oC The hysteresis of 10 oC prevents the device from turning on too soon after thermal shut-down. N Control Pin Parameters Parameter Symbol Conditions Min Typ Max Unit Input Voltage ON-state OFF-state ENA, ENBC −0.3 2.0 VIN + 0.3 0.3 V If CTRL-pin is not connected, the particular regulator(s) is/are in OFF state (900 kΩ pull-down resistor to ground).

DA9122.002 4 (12) N Current Parameters Parameter Symbol Conditions Min Typ Max Unit LDO_A Continuous Output Current IOUTA 0 135 mA LDO_B Continuous Output Current IOUTB 07 0 m A LDO_C Continuous Output Current IOUTC 05 0 m A Short Circuit Current for LDO_A ISHORTA 350 mA Short Circuit Current for LDO_B ISHORTB 265 mA Short Circuit Current for LDO_C ISHORTC 230 mA Ground Pin Current I GND(OFF) IOUT = 0 A, VENA,ENBC < 0.3 V, VIN= 3.6 24 µA Ground Pin Current I GND(ONA) IOUT = 0 A, VENA > 2 V, VENBC < 0.3 V, VIN = 3.6 125 µA Ground Pin Current I GND(ONBC) IOUT = 0 A, VENA < 0.3 V, VENBC > 2 V, VIN = 3.6 170 µA Ground Pin Current I GND(ONABC) IOUT = 0 A, VENA, ENBC > 2 V VIN = 3.6 245 µA N Voltage Parameters Parameter Symbol Conditions Min Typ Max Unit Output Voltage: Mask option for 2.85 V VOUTA VOUTA,B,C Max IOUT = 135 mA Max IOUTA = 100 mA, Max IOUTB = 70 mA, Max IOUTC = 50 mA 2.85 – 3% 2.85 – 2% 2.85 2.85 2.85 + 2% 2.85 + 2% V V LDO_A Dropout Voltage VDROPA IOUTA = 135 mA IOUTA = 100 mA 220 180 mV LDO_B Dropout Voltage VDROPB IOUTB = 70 mA 165 mV LDO_C Dropout Voltage VDROPC IOUTC = 50 mA 150 mV N External Capacitors Parameter Symbol Conditions Min Typ Max Unit Output Capacitors for all Regulators C OUTA,B,C 0.8 1 µF Effective Series Resistance ESR 0.01 0.1 2 Ω Bypass Capacitor C BYPASS 10 nF N Power Dissipation Parameter Symbol Conditions Min Typ Max Unit Junction to Case Thermal Resistance R JC 39 °C/W Junction to Ambient Thermal Resistance R JA typical PC board mounting, still air 206 °C/W Maximum Power Dissipation P d any ambient temperature JA A(MAX)J MAXd R TT P = mW Note 1 Note 1: TJ(MAX) denotes maximum operating junction temperature (+125°C), TA ambient temperature, and RJA junction-to-ambient thermal resistance (+206°C/W).

Note 2: When all regulators are disabled the start-up delay is a function of a bypass capacitor. Typically 0.5 ms for 10 nF capacitor. Figure 1. Definitions of

DA9122.002 6 (12)

APPLICATION INFORMATION

See also table External Capacitors on p. 4. FUNCTIONS N Reference voltage The device is supplied with 3.1 V to 5.3 V battery under normal conditions. An internal bandgap voltage reference is routed via 20 kOhm resistor to an external pin, where a filter capacitor can be connected in order to reduce noise level of all regulators. The startup time of the reference voltage is then determined by the value of the bypass capacitor at pin VREF. N Enable pins Each regulator can be enabled/disabled by two enable pins ENA and ENBC. Pin ENA controls regulator LDO_A and pin ENBC controls both regulator LDO_B and LDO_C. If both enable pins are forced low, the whole circuit goes into power saving sleep-mode. In the table below all functional modes are presented. N Regulators The device contains three low dropout CMOS regulators, with maximum output currents of 135 mA, 70 mA and 50 mA. Three different output voltage options are available by mask option: 2.70 V, 2.85 V and 3.00 V. N Logic Table for Enable Inputs ENA ENBC LDO_A LDO_B LDO_C VREF 1 1 ON ON ON ON 1 0 ON OFF OFF ON 0 1 O F F O NO NO N 0 0 OFF OFF OFF OFF 1 uF 1 uF 10 nF ENA ENBC OUTA OUTB OUTC VREF VIN GND MAS91221 uF 1 uF

Figure 2. LDO_C line transient for 1 V change at supply voltage.Figure 5. LDO_A load transient response to maximum output current with 10 µs steps (IOUT max 100 mA). will grow by 30% compared to 100 mA current. Figure 3. Regulator output noise density. Figure 6. LDO_B load transient response to maximum output Figure 4. Regulator output voltage temperature dependency. Figure 7. LDO_C load transient response to maximum output

Figure 8. LDO_A start-up, overshoot and cross-coupling Figure 11. Load regulation vs. temperature. Figure 9. Dropout voltage temperature Figure 12. Short circuit current variation vs. supply dependency with maximum output current. voltage.

DA9122.002 9 (12) PACKAGE (MSOP-8) OUTLINE Symbol Min Nom Max Unit A1 . 1 0 m m A1 0 0.15 mm A2 0.75 0.85 0.95 mm b 0.22 0.38 mm b1 0.22 0.30 0.33 mm c 0.08 0.23 mm c1 0.08 0.18 mm D 3.00 BSC mm E 4.90 BSC mm E1 3.00 BSC mm e 0.65 BSC mm F4 . 8 m m G0 . 6 5 m m L (Terminal length for soldering) 0.40 0.60 0.80 mm M0 . 4 1 m m N1 . 0 2 m m P0 ° 8° Q 0.25 BSC mm R0 . 0 7 m m R1 0.07 mm Dimensions do not include mold or interlead flash, protrusions or gate burrs. All measurement according to JEDEC standard MO-187. b e D A A Gage plane QP Section A - A E1 E A (b) c c1 R R1L F G M N Land Pattern Recommendation

DA9122.002 10 (12) SOLDERING INFORMATION Resistance to Soldering Heat According to RSH test IEC 68-2-58/20 2*220°C Maximum Reflow Temperature 235°C Maximum Number of Reflow Cycles 2 Seating Plane Co-planarity max 0.08 mm Lead Finish Solder plate 7.62 - 25.4 µm, material Sn 85% Pb 15% EMBOSSED TAPE SPECIFICATIONS Dimension Min/Max Unit Ao 5.00 ±0.10 mm Bo 3.20 ±0.10 mm D 1 1.50 min mm E1 . 7 5 m m F 5.50 ±0.05 mm Ko 1.45 ±0.10 mm Po 4.0 mm P1 8.0 ±0.10 mm P2 2.0 ±0.05 mm T 0.3 ±0.05 mm A Section A-A W AO T BO KO D O D 1 PO F E User Direction of Feed Pin 1 Designator

DA9122.002 11 (12) REEL SPECIFICATIONS Dimension Min Max Unit A 330 mm B1 . 5 m m C 12.80 13.50 mm D 20.2 mm N5 0 m m W 1 (measured at hub) 12.4 14.4 mm W 2 (measured at hub) 18.4 mm Trailer 160 mm Leader 390, of which minimum 160 mm of empty carrier tape sealed with cover tape mm Weight 1500 g

5000 Components on Each Reel

Reel Material: Conductive, Plastic Antistatic or Static Dissipative Carrier Tape Material: Conductive Cover Tape Material: Static Dissipative DA B C N W 1 W 2 Tape Slot for Tape Start ComponentsTrailer Leader Carrier Tape Cover Tape StartEnd

DA9122.002 12 (12)

ORDERING INFORMATION

Product Code Product Top Marking (ax) Package Comments MAS9122ASM2-T 3 x 2.70 V LDO Voltage Regulator IC A2 MSOP-8 Tape & Reel MAS9122ASM3-T 3 x 2.85 V LDO Voltage Regulator IC A3 MSOP-8 Tape & Reel MAS9122ASM4-T 3 x 3.00 V LDO Voltage Regulator IC A4 MSOP-8 Tape & Reel For more voltage options contact Micro Analog Systems Oy. LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O.Box 51 FIN-02771 Espoo, FINLAND http://www.mas-oy.com Tel. (09) 80 521 Tel. Int. +358 9 80 521 Telefax +358 9 805 3213 E-mail: info@mas-oy.com NOTICE Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products. Micro Analog Systems Oy assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Micro Analog Systems Oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.