L99VR01 STMICROELECTRONICS | Alldatasheet
Document overview
- Manufacturer or author: STMICROELECTRONICS
- PDF pages: 47
Technical content
Datasheet sections
- 1 Block diagram and pins description
- 2 Electrical specifications
- 2.1 Absolute maximum ratings
- 2.2 Thermal data
- 2.2.1 Thermal resistance
- 2.2.2 Thermal protection
- 2.3 Electrical characteristics
- 2.4 Electrical characteristics curves
- 3 Test circuit and waveforms plot
- 3.1 Load regulation
- 4 Application information
- 4.1 Voltage regulator
- 4.2 Output current limitation
- 4.3 Output voltage selection
- 4.4 Enable
- 4.5 Reset
- 4.6 Autonomous watchdog
- 4.7 Thermal warning and thermal shutdown
- 4.8 Overvoltage detection by advanced thermal warning read-out
- 4.9 Fast output discharge
- 4.10 Undervoltage lockout UVLO
- 4.11 Functional safety management
- 5 Application
- 6 Package and PCB thermal data
- 6.1 PowerSSO-12 Thermal data
- 6.2 SO-8 thermal data
- 7 Package information
- 7.1 PowerSSO-12 package information
- 7.2 SO-8 package information
Features
Max. supply voltage (load dump) VS 40 V Max. output voltage tolerance ΔVO +/-2% Output current IO 200 mA Quiescent current Iqn ≤1 µA (1) 1. Maximum value with regulator disabled
- AEC-Q100 qualified
- Operating DC power supply voltage range from 2.15 V to 28 V
- Battery and post regulation operating modes are allowed
- Low dropout voltage
- Low quiescent current consumption 5 V)
- Output voltage precision ±2%
- Enable input for enabling/disabling the voltage regulator
- Output voltage monitoring with reset output
- Negligible ESR effect on output voltage stability for load capacitor
- Programmable autonomous watchdog through external capacitor (L99VR01J only)
- Undervoltage lockout UVLO
- Fast output discharge
- Thermal shutdown and short-circuit current limitation
- Advanced thermal warning and output overvoltage diagnostic (L99VR01J only)
- Programmable short-circuit output current (L99VR01J only)
- Wide operating temperature range (T J = -40°C to 175°C L99VR01J only)
- Limited documentation available for customers that need support when dealing with ASIL requirements as per ISO 26262 Product status link L99VR01 Automotive low dropout linear voltage regulator with configurable output voltage having 200 mA current capability L99VR01 Datasheet DS13649 - Rev 3 - August 2022 For further information contact your local STMicroelectronics sales office.
Description
L99VR01 is a low dropout linear voltage regulator designed for automotive applications available in SO-8 and in PowerSSO-12 packages. The LDO delivers up to 200 mA of load current and consumes as low as 1 μA of quiescent current when the regulator is disabled. The input is 40 V tolerant to withstand load dump, while the operating input voltage range is between 2.15 V and 28 V. The L99VR01 can be configured, through SELx pins, to generate a fixed selectable output voltage accuracy (±2%) is kept over wide temperature range, line and load variation. The L99VR01 features enable, reset, autonomous watchdog, advanced thermal warning, fast output discharge and IShort control (IShort control, autonomous watchdog and advanced thermal warning are available only for the L99VR01J). The regulator output current is internally limited so that the device is protected against short-circuit and overload, besides it features over temperature protection; the short current value is configurable by an external resistance in the L99VR01J version. The L99VR01 can operate both in post regulation, attached to a pre-regulated voltage or directly connected to battery. L99VR01 DS13649 - Rev 3 page 2/47
1 Block diagram and pins description
Figure 1. Functional block diagram of L99VR01S
Figure 2. Functional block diagram of L99VR01J Table 1. Pins description Advanced thermal warning output. Ishort pin and GND sets the short circuit output current value. With the Enable high, regulator, watchdog and reset are operating. while the fast discharge circuit is turned on. watchdog monitor (just for L99VR01J).
RST pin is generated (just for L99VR01J). Wi is too low (just for L99VR01J). Leave floating if not used. Figure 3. Pins configuration
2 Electrical specifications
2.1 Absolute maximum ratings
rating conditions for extended periods may affect device reliability. Table 2. Absolute maximum ratings
2.2 Thermal data
2.2.1 Thermal resistance
Table 3. Operation junction temperature +/- 0.08 mm, Cu thickness on vias 0.025 mm.
2.2.2 Thermal protection
Table 4. Temperature threshold
- Thermal protection is guaranteed by design and characterization.
2.3 Electrical characteristics
Values specified in this section are for VS = 2.15 V to 18 V, TJ = - 40 °C to +150 °C, unless otherwise stated. Table 5. Electrical characteristics
Electrical characteristics
Item Pin Symbol Parameter Test condition Min. Typ . Max. Unit A.013 VO ∆VO / VO Static load regulation (4) IO = 1 mA to 100 mA VO= 3.3 V for VS=5 V; VO= 5 V for VS= 6 V 1 % Dynamic load regulation(3) (4) IO = 10 mA to 100 mA, Tr, f=10 us VO=3.3 V for VS=5 V; VO= 5 V for VS= 6 V 3 % A.014 VS, VO Vdp Drop voltage (5) IO = 150 mA VO = 5 V 500 mV IO = 150 mA VO = 3.3 V IO = 150 mA VO = 2.8 V IO = 150 mA VO = 2.5 V IO = 150 mA VO = 1.8 V IO = 200 mA VO = 5 V 530 mV IO = 200 mA VO = 3.3 V IO = 200 mA VO = 2.8 V IO = 200 mA VO = 2.5 V IO = 200 mA VO = 1.8 V A.015 VS, VO PSRR Power supply rejection ratio VS = 13.5 V; VO = 5 V; IO = 200 mA fr = 1 kHz 75(3) dB A.017 VS, VO Iqn Current consumption with regulator disabled Iqn = IS – IO VS = 3.5V; 13.5 V, EN = low 1 µA A.058 VS, VO Iqn_LL Current consumption with regulator enabled Iqn_LL= IS – IO VS = 3.5 V; 13.5 V, IO = 0 µA; EN = high 75 100 µA A.018 VS, VO Iqn_O Current consumption with regulator enabled Iqn_O = Is – IO VS = 3.5 V; 13.5 V, 0 < IO ≤100 µA; EN = high 100 130 µA A.019 VS, VO Iqn_50 Current consumption with regulator enabled Iqn_50 = Is – IO VS = 3.5 V; 13.5 V, IO = 50 mA EN = high 1 1.3 mA A.020 VS, VO Iqn_100 Current consumption with regulator enabled Iqn_100 = Is – IO VS = 3.5 V; 13.5 V, IO= 100 mA EN = high 1.7 2.0 mA A.021 VS, VO Iqn_200 Current consumption with regulator enabled Iqn_200 = Is – IO VS = 3.5 V; 13.5 V, IO= 200 mA EN = high 3.1 3.5 mA L99VR01
Item Pin Symbol Parameter Test condition Min. Typ . Max. Unit A.022 VS VUVLO_fall Undervoltage lockout, falling 1.8 V 1.5 1.6 1.7 VO = 5 V 4.6 4.8 4.9 A.023 VS VUVLO_ rise Undervoltage lockout, rising 1.8 V 1.7 1.8 2.1 VO=5 V 4.9 5.1 5.3 1. Ishort typical value of 120 mA for t= 400 µs during the power on 3. Parameters are guaranteed by design 4. Referred to Figure 30. Maximum load variation response 5. Considering that the minimum operating input voltage is 2.15 V, the dropout voltage (V dp) is not defined for output voltages below 1.8 V. Table 6. Fast output discharge
3.3 V, VO = 5 V
Table 7. Reset DS13649 - Rev 3 page 10/47
Table 8. Watchdog (only for L99VR01J)
- Watchdog input requires a square wave signal (duty cycle of 50 %)
Table 9. Enable Table 10. Output voltages selectors DS13649 - Rev 3 page 11/47
Table 11. Thermal warning and protection (only for L99VR01J) temperature range. device functionality at high junction temperature is guaranteed by characterization. All parameters are guaranteed by design for Vo not reported in test condition. – ceramic capacitor multistrate SMD, 4.7 μF, 100 V, ±20%, X7R, C series TDK. DS13649 - Rev 3 page 12/47
2.4 Electrical characteristics curves
Figure 4. Output voltage vs Tj Figure 5. Output voltage vs VS Figure 6. Drop voltage vs output current Figure 7. Current consumption vs output current Figure 8. Current consumption vs input voltage (Io < 1mA) Figure 9. Current consumption vs input
Figure 10. Current consumption vs input Figure 11. Short-circuit current vs Tj (Ishort pin floating) Figure 12. Short-circuit current vs Tj (Ishort pin tied to
3 V 3
2 V 8
2 V 5
1 V 8
1 V 5
1 V 2
0 V 8
Figure 13. Short-circuit current vs input voltage
5 V_Ishort_max
5 V_Ishort_min
3 V 3_Ishort_max
3 V 3_Ishort_min
2 V 8_Ishort_max
2 V 8_Ishort_min
2 V 5_Ishort_max
2 V 5_Ishort_min
1 V 8_Ishort_max
1 V 8_Ishort_min
1 V 5_Ishort_max
1 V 5_Ishort_min
1 V 2_Ishort_max
1 V 2_Ishort_min
0 V 8_Ishort_max
0 V 8_Ishort_min
Figure 14. Output voltage vs enable voltage (VO =0.8 V) Figure 15. Output voltage vs enable voltage (VO =1.2 V)
3 Test circuit and waveforms plot
3.1 Load regulation
Figure 29. Load regulation test circuit Figure 30. Maximum load variation response
4 Application information
Figure 31. Application schematic Figure 32. Application schematic – Post regulation Suggested value is C0 = 3.3 µF. capacitors with low ESR. A ceramic SMD capacitor is recommended on Vo pin.
Application information
DS13649 - Rev 3 page 18/47
4.1 Voltage regulator
dissipation and maximizing the output current.
4.2 Output current limitation
Figure 33. Behavior of output current versus regulated voltage Vo between IShort pin and ground (L99VR01J version only).
Figure 34. Ishort versus Rsh
4.3 Output voltage selection
(SELx) determines the output voltage according to the following truth table. Table 12. Truth table configuration is acknowledged, it cannot be changed until next EN transition. When all the pins are left not connected, the default configuration will be selected.
Figure 35. Example of output voltage selection SELx pins are internally connected to GND via pull down current source.
4.4 Enable
and the Fast Output Discharge circuit is activated. pin is depicted in the following figure. Figure 36. Typical example of enable control
4.5 Reset
external resistance value can be in a range between 4.7 KΩ and 20 KΩ. Leave the RST pin floating if not used. the watchdog activation/deactivation based on the regulator output current consumption monitoring. Figure 37. Reset timing diagram
4.6 Autonomous watchdog
watchdog will not be activated, while if Io > Iw_off the watchdog will be activated.
Figure 38. Watchdog timing diagram always tied to ground by an external capacitor (Ctw) when the watchdog is used. asserted low and the current needed to charge/discharge the output capacitor Co. Table 13. Watchdog timer
4.7 Thermal warning and thermal shutdown
threshold Twarn - Twarn_hyst.
Figure 39. Thermal warning diagram activation/deactivation based on the regulator output current consumption monitoring. Leave floating if not used.
4.8 Overvoltage detection by advanced thermal warning read-out
shown in Figure 41. Warning signal caused by overvoltage and thermal warning on TW pin). Figure 40. Square wave on TW pin generated during an overvoltage signal caused by overvoltage and thermal warning on TW pin.
Figure 41. Warning signal caused by overvoltage and thermal warning on TW pin
4.9 Fast output discharge
4.10 Undervoltage lockout UVLO
Figure 42. Undervoltage lockout on output voltage
4.11 Functional safety management
safety level, should be made at system level under user responsibility. Table 14. Safety requirement SR-001 Operation of the voltage regulator(s) is allowed till over temperature limit. wave at TW pin is not generated. Table 15. Implemented safety mechanism
SM6 RST reset assertion in case ofVO undervoltage detection SR-003 In addition to the internal watchdog for checking the correct operation of the microcontroller, it can be considered a system-level safety mechanism. More details about functional safety can be found in the device safety manual, provided on customer request. L99VR01 Functional safety management DS13649 - Rev 3 page 27/47
5 Application
Figure 43. Typical application
6 Package and PCB thermal data
6.1 PowerSSO-12 Thermal data
Figure 44. PowerSSO-12 PC board 0.025 mm, Footprint dimension 2.2 mm x 2.9 mm.
Figure 47. Thermal fitting model of a Vreg in PowerSSO-12 Table 16. PowerSSO-12 thermal parameter
6.2 SO-8 thermal data
Figure 48. SO-8 PC board Footprint dimension 2.2 mm x 2.9 mm.
Figure 51. Thermal fitting model of a Vreg in SO-8 Table 17. SO-8 thermal parameter
7 Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.
7.1 PowerSSO-12 package information
Figure 52. PowerSSO-12 package dimensions Table 18. PowerSSO-12 package mechanical data
Package information
DS13649 - Rev 3 page 35/47
7.2 SO-8 package information
Figure 53. SO-8 package dimension Table 19. SO-8 package mechanical data
E1(2) 3.80 3.90 4.00 e 1.27 h 0.25 0.50 L 0.40 1.27 L1 1.04 k 0° 8° ccc 0.10 1. Dimensions D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.15 mm in total (both side). 2. Dimension “E1” does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25 mm per side. L99VR01 SO-8 package information DS13649 - Rev 3 page 37/47
7.3 PowerSSO-12 packaging information
Figure 54. PowerSSO-12 tape and reel shipment (suffix “TR”)
7.4 SO-8 packaging information
Figure 55. SO-8 tape and reel shipment (suffix “TR”)
8 Order codes
Package Tape & reel SO-8 L99VR01STR PowerSSO-12 L99VR01JTR P/N Enable Reset Autonomous watchdog Advanced thermal warning Ishort CTRL L99VR01STR X X - - - L99VR01JTR X X X X X L99VR01 Order codes DS13649 - Rev 3 page 40/47
Revision history
Table 20. Document revision history Section 2.4 Electrical characteristics curves.. Updated Section Features in cover page. Updated Table 3. Operation junction temperature. Updated Section 4.11 Functional safety management. Updated Table 6. Fast output discharge. Updated Table 11. Thermal warning and protection (only for L99VR01J).
Contents
DS13649 - Rev 3 page 43/47
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