TPS7B69xx-Q1 High-Voltage Ultra-Low IQ Low-Dropout Regulator
- SLVSCJ8B November 2014 – January 2015
  
  PRODUCTION DATA.

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DATA SHEET

TPS7B69xx-Q1 High-Voltage Ultra-Low IQ Low-Dropout Regulator

1 Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
4 to 40-V Wide V_I Input Voltage Range With up to 45-V Transient
Maximum Output Current: 150 mA
Low Quiescent Current (I_Q):
- 15 µA Typical at Light Loads
- 25 µA Maximum Under Full Temperature
450-mV Typical Low Dropout Voltage at 100 mA Load Current
Stable With Low ESR Ceramic Output Capacitor (2.2 to 100 µF)
Fixed 2.5-V, 3.3-V, and 5-V Output Voltage Options
Integrated Fault Protection:
- Thermal Shutdown
- Short-Circuit Protection
Packages:
- 4-Pin SOT-223 Package
- 5-Pin SOT-23 Package

2 Applications

Automotive
Infotainment Systems With Sleep Mode
Always-On Battery Applications
- Door Modules
- Remote Keyless-Entry Systems
- Immobilizers

3 Description

The TPS7B69xx-Q1 device is a low-dropout linear regulator designed for up to 40-V V_I operations. With only 15-µA (typical) quiescent current at light load, the device is suitable for standby microcontrol-unit systems especially in automotive applications.

The devices feature an integrated short-circuit and overcurrent protection. The TPS7B69xx-Q1 device operates over a –40°C to 125°C temperature range. Because of these features, the TPS7B6925-Q1, TPS7B6933-Q1, and TPS7B6950-Q1 devices are well suited in power supplies for various automotive applications.

Device Information⁽¹⁾

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS7B6925-Q1 TPS7B6933-Q1 TPS7B6950-Q1	SOT-223 (4)	6.50 mm × 3.50 mm
TPS7B6925-Q1 TPS7B6933-Q1 TPS7B6950-Q1	SOT-23 (5)	2.90 mm × 1.60 mm

For all available packages, see the orderable addendum at the end of the datasheet.

4 Typical Application Schematic

5 Revision History

Changes from A Revision (December 2014) to B Revision

Changed the TPS7B6933-Q1 device status from Product Preview to Production DataGo
Added the TPS7B6933-Q1 device test results to the Typical Characteristics section Go

Changes from * Revision (November 2014) to A Revision

Changed the device status from Product Preview to Production DataGo

6 Pin Configuration and Functions

DCY Package

4-Pin SOT-223

Top View

DBV Package

5-Pin SOT-23

Top View

NC - No internal connection

Pin Functions

PIN			TYPE	DESCRIPTION
NAME	NO.
NAME	SOT-223	SOT-23
GND	2	3	G	Ground reference
GND	4	4	G	Ground reference
IN	1	1	P	Input power-supply voltage
NC	—	2	—	Not connected pin
OUT	3	5	P	Output voltage

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)⁽¹⁾

		MIN	MAX	UNIT
Unregulated input voltage	IN⁽²⁾⁽³⁾⁽⁴⁾	–0.3	45	V
Regulated output voltage	OUT⁽²⁾⁽³⁾	–0.3	7	V
Operating junction temperature range, T_J		–40	150	°C
Storage temperature, T_stg		–65	150	°C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) All voltage values are with respect to the GND terminal.

(3) Absolute negative voltage on these pins must not to go below –0.3 V.

(4) Absolute maximum voltage, withstands 45 V for 200 ms.

7.2 ESD Ratings

				VALUE	UNIT
V_(ESD)	Electrostatic discharge	Human body model (HBM), per AEC Q100-002⁽¹⁾		±2000	V
		Charged device model (CDM), per AEC Q100-011	Other pins	±500
		Charged device model (CDM), per AEC Q100-011	Corner pins (4 pin: 1, 3, and 4; 5 pin: 1, 3, 4, and 5)	±750

(1) AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

		MIN	MAX	UNIT
V_I	Unregulated input voltage	4	40	V
V_O	Output voltage	0	5.5	V
C_O	Output capacitor requirements⁽¹⁾	2.2	100	µF
ESR_CO	Output ESR requirements⁽²⁾	0.001	2	Ω
T_J	Operating junction temperature range	–40	150	°C

(1) The output capacitance range specified in this table is the effective value.

(2) Relevant ESR value at ƒ = 10 kHz.

7.4 Thermal Information

THERMAL METRIC⁽¹⁾⁽²⁾		DCY	DBV	UNIT
THERMAL METRIC⁽¹⁾⁽²⁾		4 PINS	5 PINS	UNIT
R_θJA	Junction-to-ambient thermal resistance	64.2	210.4	°C/W
R_θJC(top)	Junction-to-case (top) thermal resistance	46.8	126.1
R_θJB	Junction-to-board thermal resistance	13.3	38.4
ψ_JT	Junction-to-top characterization parameter	6.3	16
ψ_JB	Junction-to-board characterization parameter	13.2	37.5

(1) The thermal data is based on the JEDEC standard high-K profile, JESD 51-7, 2s2p four layer board with 2-oz copper. The copper pad is soldered to the thermal land pattern. Also correct attachment procedure must be incorporated.

(2) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics

V_IN = 14 V, 1 mΩ < ESR < 2 Ω, T_J = –40°C to 150 °C (unless otherwise noted)

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY VOLTAGE AND CURRENT (IN)
V_I	Input voltage	Fixed 2.5-V output, I_O = 1 mA	4		40	V
		Fixed 3.3-V output, I_O = 1 mA	4		40
		Fixed 5-V output, I_O = 1 mA	5.5		40
I_Q	Quiescent current	Fixed 2.5-V and 3.3-V version, V_I = 4 to 40 V, Fixed 5-V version, V_I = 5.5 to 40 V, I_O = 0.2 mA		15	25	µA
V_IN(UVLO)	IN undervoltage detection	Ramp V_I up until the output turns on	3.65			V
V_IN(UVLO)	IN undervoltage detection	Ramp V_I down until the output turns OFF			3	V
REGULATED OUTPUT (OUT)
V_O	Regulated output	Fixed 2.5-V version, V_I = 4 to 40 V, I_O = 1 to 150 mA	–3%		3%
		Fixed 3.3-V version, V_I = 5 to 40 V, I_O = 1 to 150 mA	–3%		3%
		Fixed 5-V version, V_I = 6.5 to 40 V, I_O = 1 to 150 mA	–3%		3%
ΔV_O(ΔVI)	Line regulation	V_I = 6 to 40 V, ∆V_O, I_O = 10 mA			10	mV
ΔV_O(ΔIL)	Load regulation	I_O = 1 to 150 mA, ∆V_O			20	mV
V_DROP	Dropout voltage	Fixed 2.5-V version, V_I – V_O, I_O = 50 mA			1.575	V
		Fixed 2.5-V version, V_I – V_O, I_O = 100 mA			1.575	V
		Fixed 3.3-V version, V_I – V_O, I_O = 50 mA			799	mV
		Fixed 3.3-V version, V_I – V_O, I_O = 100 mA			800
		Fixed 5-V version, V_I – V_O, I_O = 50 mA		220	400
		Fixed 5-V version, V_I – V_O, I_O = 100 mA		450	800
I_O	Output current	V_O in regulation	0		150	mA
I_OCL	Output current-limit	OUT short to ground	150		500	mA
PSRR	Power supply ripple rejection⁽¹⁾	V_rip = 0.5 V_pp, Load = 10 mA, ƒ = 100 Hz, C_O = 2.2 µF		60		dB
OPERATING TEMPERATURE RANGE
T_sd	Junction shutdown temperature			175		°C
T_hys	Hysteresis of thermal shutdown			25		°C

(1) Design Information—Not tested, ensured by characterization.

7.6 Typical Characteristics

Figure 1. 5-V Output Voltage vs Junction Temperature

	V_I = 14 V

Figure 3. 2.5-V Output Voltage vs Junction Temperature

	I_O = 0 mA

Figure 5. 3.3-V Output Voltage vs Supply Voltage

Figure 7. Quiescent Current vs Output Current

Figure 9. Dropout Voltage vs Output Current

I_O = 10 mA	V_I = 14 V	T_A = 25°C
C_O = 2.2 µF

Figure 11. Power Supply Rejection Ratio

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 5 V

Figure 13. Load Transient (1 to 100 mA, 5 V)

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 2.5 V

Figure 15. Load Transient (1 to 100 mA, 2.5 V)

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 3.3 V

Figure 17. Load Transient (1 to 150 mA, 3.3 V)

V_I = 9 to 16 V	C_O = 2.2 µF	1 ms/div
I_O = 10 mA

Figure 19. Line Transient (V_O = 5 V)

V_I = 9 to 16 V	C_O = 2.2 µF	1 ms/div
I_O = 10 mA

Figure 21. Line Transient (V_O = 2.5 V)

C_O = 2.2 µF, 400 µs/div

Figure 23. 3.3-V Power Up

	V_I = 14 V

Figure 2. 3.3-V Output Voltage vs Junction Temperature

	I_O = 0 mA

Figure 4. 5-V Output Voltage vs Supply Voltage

	I_O = 0 mA

Figure 6. 2.5-V Output Voltage vs Supply Voltage

	I_O = 0.2 mA

Figure 8. Quiescent Current vs Supply Voltage

I_O = 100 mA	V_I = 14 V	T_A = 25°C
C_O = 2.2 µF

Figure 10. Power Supply Rejection Ratio

Figure 12. ESR Stability vs Output Capacitance

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 3.3 V

Figure 14. Load Transient (1 to 100 mA, 3.3 V)

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 5 V

Figure 16. Load Transient (1 to 150 mA, 5 V)

V_I = 14 V	C_O = 2.2 µF	1 ms/div
V_O = 2.5 V

Figure 18. Load Transient (1 to 150 mA, 2.5 V)

V_I = 9 to 16 V	C_O = 2.2 µF	1 ms/div
I_O = 10 mA

Figure 20. Line Transient (V_O = 3.3 V)

C_O = 2.2 µF, 400 µs/div

Figure 22. 5-V Power Up

C_O = 2.2 µF, 400 µs/div

Figure 24. 2.5-V Power Up

8 Detailed Description

8.1 Overview

The TPS7B69xx-Q1 high-voltage linear regulator operates over a 4-V to 40-V input voltage range. The device has an output current capability of 150 mA and offers fixed output voltages of 2.5 V (TPS7B6925-Q1), 3.3 V (TPS7B6933-Q1) or 5 V (TPS7B6950-Q1). The device features a thermal shutdown and short-circuit protection to prevent damage during over-temperature and overcurrent conditions.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Input (IN)

The IN pin is a high-voltage-tolerant pin. A capacitor with a value higher than 0.1 µF is recommended to be connected close to this pin to better the transient performance.

8.3.2 Output (OUT)

The OUT pin is the regulated output based on the required voltage. The output has current limitation. During the initial power up, the regulator has a soft start incorporated to control the initial current through the pass element and the output capacitor.

In the event that the regulator drops out of regulation, the output tracks the input minus a drop based on the load current. When the input voltage drops below the UVLO threshold, the regulator shuts down until the input voltage recovers above the minimum startup level.

8.3.3 Output Capacitor Selection

For stable operation over the full temperature range and with load currents up to 150 mA, use a capacitor with an effective value between 2.2 µF and 100 µF and ESR smaller than 2 Ω. To better the load transient performance, an output capacitor, such as a ceramic capacitor with low ESR, is recommended.

8.3.4 Low-Voltage Tracking

At low input voltages, the regulator drops out of regulation and the output voltage tracks input minus a voltage based on the load current (I_L) and switch resistor. This tracking allows for a smaller input capacitor and can possibly eliminate the need for a boost converter during cold-crank conditions.

8.3.5 Thermal Shutdown

The TPS7B69xx-Q1 family of devices incorporates a thermal-shutdown (TSD) circuit as a protection from overheating. For continuous normal operation, the junction temperature should not exceed the TSD trip point. If the junction temperature exceeds the TSD trip point, the output turns off. When the junction temperature falls below the TSD trip point minus the hysteresis of TSD, the output turns on again. This cycling limits the dissipation of the regulator, protecting it from damage as a result of overheating.

The purpose of the design of the internal protection circuitry of the TPS7B69xx-Q1 family of devices is for protection against overload conditions, not as a replacement for proper heat-sinking. Continuously running the TPS7B69xx-Q1 family of devices into thermal shutdown degrades device reliability.

8.4 Device Functional Modes

8.4.1 Operation With V_I Less Than 4 V

The TPS7B69xx-Q1 family of devices operates with input voltages above 4 V. The maximum UVLO voltage is 3 V and the device operates at an input voltage above 4 V. The device can also operate at lower input voltages; no minimum UVLO voltage is specified. At input voltages below the actual UVLO, the device shuts down.

8.4.2 Operation With V_I Greater Than 4 V

When V_I is greater than 4 V, if the input voltage is higher than V_O plus the dropout voltage, the output voltage is equal to the set value. Otherwise, the output voltage is equal to V_I minus the dropout voltage.