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TPS922050D1DRLR

The TPS922050D1DRLR is an electronic component from Texas Instruments. View the full TPS922050D1DRLR datasheet below including electrical characteristics, absolute maximum ratings.

Manufacturer

Texas Instruments

Category

Integrated Circuits (ICs)

Overview

The TPS92205x family is a 1A / 2A non-synchronous Boost / Buck-Boost LED driver with 4.5V to 65V wide input range. By integrating the low-side NMOS, the device is capable of driving LEDs with high power density and high efficiency. The device also supports common anode anodeconnection and single layer PCB. The switching frequency is set at 400kHz or 1MHz.

The TPS92205x family support PWM dimming by configuring through the DIM input pins by means of simple high and low signals. The TPS92205x family support analog dimming by configuring through the DIM input pins by means of analog voltage signals. The device adopts an adaptive off-time current mode control along with smart and accurate sampling to enable fast PWM dimming and achieve high dimming ratio.

The TPS92205x family also provides multiple systematic protections, including LED open and short, switching FET open and short, sense resistor open and short, and thermal shutdown.

Features

  • 4.5V to 65V wide input range
  • LED common anode connection
  • Integrated 300mΩ MOSFET:
  • -Typical current limit (1.6A / 3.2A)
  • -Switching frequency (400kHz / 1MHz)
  • Advanced dimming options:
  • -Analog dimming (200:1)
  • -Fast PWM dimming (50ns pulse width)
  • Full protection features:
  • -LED open and short protection
  • -Switching FET open and short protection
  • -External component failure protection
  • -Cycle-by-cycle current limit
  • -Thermal shutdown
  • Package: WSON-8, HVSSOP-8, SOT583

Applications

  • Constant illumination:
  • -Indoor and outdoor lighting
  • -Appliance lighting
  • -Cold/warm WLED lighting
  • -Emergency and signage lighting
  • -Security floodlight
  • -LED bulb and lamp
  • -LCD backlight
  • Instant illumination:
  • -Machine vision and camera flash
  • -Fire alarm and strobe

Simplified Schematic

Simplified Schematic

Pin Configuration

  • SW 8

  • CSN 7

  • CSP 6

  • GND 1

  • COMP 5

  • 2 VIN

  • 3 DIM

  • 4 VCC

Thermal Pad

Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containingit. TJ = -40°C to +125°C, VIN = 7V, (unlessotherwise noted).

PARAMETERPARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLYINPUT SUPPLY
Rising V IN3.03.23.4V
V VIN_UVLOV IN undervoltage lockout
Hysteresis		Falling V IN2.83.0
0.2		3.2V
V
I OFFPWM off quiesent current from V INV DIM = 0V, device enabled1.01.3mA
I OPNormal operating current400kHz switching frequency2.3mA
I OPNormal operating current1MHz switching frequency3.5mA
V VCCInternal LDO output voltageI VCC = 5mA5.05.155.3V
I VCC_LIMInternal LDO output current limit152026mA
DIMMINGDIMMINGDIMMINGDIMMINGDIMMINGDIMMINGDIMMING
V PWM_LDIM low-level input voltage (D1 version)0.4V
V PWM_HDIM high-level input voltage (D1 version)1.2V
t PWM_OUT_ONPWM output minimum on time (D1 version)100ns
t PWM_IN_ONPWM input minimum on time (D1 verison)100ns
V ADIMDIM input voltage range (D2 version)02.2V
FEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIERFEEDBACK AND ERROR AMPLIFIER
g M(ea)Transconductance gainV DIM = 2V, V CSP-CSN = 200mV205265325μA/V
I COMPSource/sink currentV DIM = 2V, V CSP-CSN = 200mV ± 200mV±24±40±56μA
V REFCSP-CSN pin voltageV DIM = 2V193200207mV
V REFCSP-CSN pin voltageV DIM = 0.2V18.52021.5mV
I LEAK_CSP/NCSP+CSN pin leakage currentV IN = 60V, V DIM = 2V48μA
I LEAK_CSP/NCSP+CSN pin leakage currentV IN = 60V, V DIM = 0V15μA
POWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGEPOWER STAGE
R DSONSwitching FET on resistanceV IN ≥ 5V300mΩ
t min_ONSwitching FET minimum on time140160ns
t min_OFFSwitching FET minimum off time140160ns
f SWSwitching FET frequency (TPS922051, TPS922050DRLR)0.4MHz
f SWSwitching FET frequency (TPS922050DSGR, TPS922050DGNR)1.0MHz
CURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMITCURRENT LIMIT
I LIMSwitching FET cycle-by-cycle current limit (TPS922050)1.41.61.8A
I LIMSwitching FET cycle-by-cycle current limit (TPS922051)2.83.23.6A
THERMAL PROTECTIONTHERMAL PROTECTION
Thermal shutdown temperature		THERMAL PROTECTIONTHERMAL PROTECTIONTHERMAL PROTECTION
165		THERMAL PROTECTIONTHERMAL PROTECTION
°C
T TSDHysteresis15°C

Absolute Maximum Ratings

over operating ambient temperature range (unless otherwise noted) (1)

MINMAXUNIT
Voltage on pins VIN, CSP, CSN, SW-0.365V
Voltage on pins VCC, DIM, COMP-0.35.5V
T JJunction temperature-40125°C
T stgStorage temperature-65150°C

Recommended Operating Conditions

over operating ambient temperature range (unless otherwise noted)

MINMAXUNIT
V INSupply voltage range4.563V
V SWSwitching node voltage range063V
V CSP , V CSNSense common-mode voltage range063V
V VCCLDO output voltage range05V
V DIMDimming voltage range05V
V COMPCompensation capacitor voltage range05V
T AOperating ambient temperature-4085°C

Thermal Information

METRIC (1)THERMALTPS922050/1 WSONTPS922050/1 HVSSOPTPS922050 SOT 8 PINSUNIT
8 PINS8 PINS
R θJAJunction-to-ambient thermal resistance66.947.8113.1°C/W
R θJC(top)Junction-to-case (top) thermal resistance79.274.141.9°C/W
R θJBJunction-to-board thermal resistance31.120.424°C/W
ψ JTJunction-to-top characterization parameter2.24.61°C/W
ψ JBJunction-to-board characterization parameter31.120.423.6°C/W

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Typical Application

The TPS922050/1 is typically used as a Buck converter to drive one or more LEDs from an input from 4.5V to 63V range.

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
TPS922050D1Texas Instruments—
TPS922050D1DGNRTexas Instruments
TPS922050D1DRLR.ATexas Instruments—
TPS922050D1DSGRTexas Instruments8-WFDFN Exposed Pad
TPS922050D1DSGR.ATexas Instruments—
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