TPS62841

Step-Down Converter

The TPS62841 is a step-down converter from Texas Instruments. View the full TPS62841 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

TPS62841 shares its datasheet with TPS62840, whose page lists every part number it covers.

Official TPS62841 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Texas Instruments

TPS62841 Key Specifications

Parameter	Value
Operating quiescent current (IQ)	60 nA (typical)
100% duty-cycle mode IQ	120 nA
Shutdown current	25 nA
Output current	750 mA (max)
Efficiency	80% at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
Switching frequency	1.8 MHz (typical)
Output voltage selection	16 selectable voltages via VSET pin

TPS62841 Overview

Part: TPS62840 — Texas Instruments

Type: Step-Down Converter

Description: A high-efficiency step-down converter with an ultra-low operating quiescent current of 60 nA, supporting an input voltage range of 1.8 V to 6.5 V and providing up to 750 mA output current.

Operating Conditions:

Supply voltage: 1.8 V to 6.5 V
Operating temperature: -40 to +125 °C
Output current: up to 750 mA

Absolute Maximum Ratings:

Max supply voltage: 7 V
Max junction/storage temperature: 150 °C

Key Specs:

Operating quiescent current (IQ): 60 nA (typical)
100% duty-cycle mode IQ: 120 nA
Shutdown current: 25 nA
Output current: 750 mA (max)
Efficiency: 80% at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
Switching frequency: 1.8 MHz (typical)
Output voltage selection: 16 selectable voltages via VSET pin

Features:

60-nA operating quiescent current
100% duty-cycle mode with 120-nA IQ
RF friendly DCS-Control™
16 selectable output voltages via VSET pin
Auto transition PFM/PWM or forced-PWM mode
Selectable forced PWM and STOP modes
Output discharge function

Applications:

Smart meters, smart thermostats
Asset tracking devices
Wearable electronics
Medical sensor patches and patient monitors
Industrial IoT (smart sensors) / NB-IoT
Test and measurement
ATEX / intrinsic safety

Package:

SON-8 (DLC)
WCSP-6 (YBG)
HVSSOP-8 (DGR)

TPS62841 Features

1 · 60-nA operating quiescent current
100% duty-cycle mode with 120-nA IQ
Input voltage range VIN from 1.8 V to 6.5 V
Output current up to 750 mA
RF friendly DCS-Control™
80% efficiency at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
16 selectable output voltages via VSET pin
Auto transition PFM/PWM or forced-PWM mode
Selectable forced PWM and STOP modes
Output discharge function
25-nA shutdown current
SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages

TPS62841 Applications

Smart meters, smart thermostats
Asset tracking devices
Wearable electronics
Medical sensor patches and patient monitors
Industrial IoT (smart sensors) / NB-IoT
Test and measurement
ATEX / intrinsic safety

TPS62841 Pin Configuration

TPS62841 Electrical Characteristics

VIN = 3.6 V, TJ = -40°C to 125°C, STOP = GND, MODE = GND, typical values are at TJ = 25°C (unless otherwise noted)

PARAMETER	PARAMETER	TEST CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY	SUPPLY	SUPPLY	SUPPLY	SUPPLY	SUPPLY	SUPPLY
I Q_NO_LOAD	No load operating input current	EN = V IN , I OUT = 0μA, V OUT = 1.8V device switching		60		nA
I Q_NO_LOAD	No load operating input current	EN = V IN, I OUT = 0μA, V OUT = 1.2V device switching		80		nA
I Q_NO_LOAD	No load operating input current (PWM Mode)	EN = V IN , I OUT = 0μA, V OUT = 1.8V, MODE = V IN device switching		3		mA
I Q_VIN	Operating quiescent current into pin VIN	EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = 25°C (DLC package option)		36	100	nA
I Q_VOS	Operating quiescent current into pin VOS	EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = 25°C (DLC package option)		56	120	nA
I Q_VIN	Operating quiescent current into pin VIN	EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = -40°C to 85°C		36	360	nA
I Q_VOS	Operating quiescent current into pin VOS	EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = -40°C to 85°C		56	170	nA
I Q_VOS	Operating quiescent current into VOS pin	EN = V IN , V OUT = 3.3V device not switching		70		nA
I Q_VOS	Operating quiescent current into VOS pin	EN = V IN , V OUT < 1.5 V device not switching		5		nA
I Q_VOS	Operating quiescent current into VOS pin	EN, STOP = V IN , 3V < V OUT < 3.3V T J = -40°C to 85°C		5	100	nA
I Q_100%_MODE	Operating quiescent current 100% Mode	V IN = V OUT = 3.3V, T J = -40°C to 85°C		120		nA
I Q_VIN_STOP	Operating quiescent current into pin VIN	STOP = High, V OUT = 1.8V, T J = -40°C to 85°C		70	175	μA
I SD	Shutdown current	EN = GND, shutdown current into V IN VSET = GND, T J = -40°C to 85°C		25	300	nA
V TH_UVLO+	Undervoltage lockout threshold	Rising V IN		1.72	1.8	V
V TH_UVLO-		Falling V IN		1.45	1.75	V
EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS	EN, MODE, STOP INPUTS
V IH_TH	High level input voltage		1.1			V
V IL_TH	Low level input voltage				0.4	V
I IN	Input bias current	MODE input, T J = -40°C to 85°C		1	25	nA
R PD	Internal pull-down resistance	EN, STOP inputs	200	450		k Ω

TPS62841 Absolute Maximum Ratings

		MIN	MAX	UNIT
	VIN	-0.3	7	V
	SW (DC)	-0.3	V IN + 0.3	V
	SW (AC), less than 10ns (3)	-2	8.5	V
	EN, MODE, STOP	-0.3	6.5	V
	VSET	-0.3	V IN + 0.3 < 3.6	V
	VOS	-0.3	3.7	V
Operating junction temperature, T J	Operating junction temperature, T J	-40	150	°C
Storage temperature, T stg	Storage temperature, T stg	-65	150	°C

TPS62841 Recommended Operating Conditions

		MIN	NOM	MAX	UNIT
V IN	Supply voltage V IN	1.8		6.5	V
L	Effective inductance	1.51	2.2	2.9	μH
C OUT	Effective output capacitance	3	10	40	μF
C IN	Effective input capacitance	1	4.7		μF
C VSET	External parasitic capacitance at VSET pin			100	pF
R SET	Nominal resistance range for external voltage selection resistor (E96 resistor series) External voltage selection resistor tolerance	0.909		267 1%	k Ω
	External voltage selection resistor temperature coefficient		±200		ppm/°C
T J	Operating junction temperature range	-40		125	°C

TPS62841 Thermal Information

THERMAL METRIC (1)	THERMAL METRIC (1)	8 Pins DLC Package	6 Pins YBG Package	8 Pins DGR Package	DGR EVM	UNIT
		JEDEC PCB 51-7	JEDEC PCB 51-7	JEDEC PCB 51-5	TPS62841-2EVM123
R θ JA	Junction-to-ambient thermal resistance	105.6	133.4	54.4	46.9	°C/W
R θ JC(top)	Junction-to-case (top) thermal resistance	75.7	0.4	58.1	N/A	°C/W
R θ JB	Junction-to-board thermal resistance	31.9	39.4	25.9	N/A	°C/W
ψ JT	Junction-to-top characterization parameter	2.3	0.1	1.2	0.9	°C/W
ψ JB	Junction-to-board characterization parameter	31.5	39.4	25.9	17.4	°C/W
R θ JC(bot)	Junction-to-case (bottom) thermal resistance	n/a	n/a	11.7	N/A	°C/W

TPS62841 Typical Application

TPS62840

SLVSEC6D -JUNE 2019-REVISED MARCH 2020

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