A6210GEUTR-T Allegro Microsystems Inc, A6210GEUTR-T Datasheet

IC LED DRIVER HIGH BRIGHT 16-QFN

A6210GEUTR-T

Manufacturer Part Number
A6210GEUTR-T
Description
IC LED DRIVER HIGH BRIGHT 16-QFN
Manufacturer
Allegro Microsystems Inc
Type
HBLED Driverr
Datasheet

Specifications of A6210GEUTR-T

Topology
PWM, Step-Down (Buck), Switched Capacitor (Charge Pump)
Number Of Outputs
1
Internal Driver
Yes
Type - Secondary
High Brightness LED (HBLED)
Frequency
100kHz ~ 2 MHz
Voltage - Supply
9 V ~ 46 V
Voltage - Output
46V
Mounting Type
Surface Mount
Package / Case
16-WSQFN Exposed Pad
Operating Temperature
-40°C ~ 105°C
Current - Output / Channel
3A
Internal Switch(s)
Yes
Efficiency
90%
Led Driver Application
Power Supplies And Lamps
No. Of Outputs
1
Output Current
3A
Output Voltage
46V
Input Voltage
9V To 46V
Dimming Control Type
PWM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
620-1281-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A6210GEUTR-T
Manufacturer:
ROHM
Quantity:
5 160
Part Number:
A6210GEUTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Applications:
▪ High brightness LEDs
▪ LED driver modules, power supplies and lamps, such as
Package 16-contact QFN (suffix EU):
6210-DS, Rev. 1
Features and Benefits
▪ User-configurable on-time, achieving switching
▪ Brightness control through PWM of DIS pin
▪ Minimal external components required
▪ No output capacitor required
▪ Wide input voltage range: 9 to 46 V
▪ Low 0.18 V sense voltage for higher efficiency
▪ Output Current: up to 3.0 A
▪ Low standby current <100 μA
▪ Thermal shutdown
▪ Supplied in a thermally-enhanced 4 mm QFN package
MR16 and MR11
frequencies up to 2.0 MHz
4 mm × 4 mm × 0.75 mm
V
IN
LED span voltage = 10.5 V
Average LED current = 500 mA
Peak to peak current = 60 mA
Switching frequency = 1.4 MHz
Efficiency = 90.5%
R1
150 kΩ
24 V
PWM or Switch
C1
1.0 μF
3 A, 2 MHz Buck-Regulating LED Driver
VIN
TON
DIS
Typical Application
NC
A 6210
Description
The A6210 is a buck regulator that uses valley current-mode
control. This control scheme allows very short switch on-times
to be achieved, making it ideal for applications that require
high switching frequencies combined with high input voltages
and low output LED span voltages.
Low system cost is accomplished through high switching
frequencies of up to 2.0 MHz, allowing smaller and lower value
inductors and capacitors. In addition, few external components
are required through high levels of integration. Optimal drive
circuits minimize switching losses.
The switching frequency is maintained constant, as the on-time
is modulated by the input voltage. This feed-forward control
ensures excellent line correction. The on-time is set by an
external resistor pulled-up to the input supply.
Internal housekeeping and bootstrap supplies are provided
which require the addition of only one small ceramic capacitor. A
top-off charge pump ensures correct operation at light loads.
Internal diagnostics provide comprehensive protection against
input undervoltages and overtemperatures.
The device package is a 16-contact, 4 mm × 4 mm, 0.75 mm
nominal overall height QFN, with exposed pad for enhanced
thermal dissipation. It is lead (Pb) free, with 100% matte tin
leadframe plating.
GND
Suggested Parts
Name
C1
C2
D1
R1
R2
L1
BOOT
SGND
ISEN
LX
Description
1 μF, 25V, X5R or X7R ceramic, 1210
22 nF, 50V, X5R or X7R ceramic, 0805
1 A, 30 V, Schottky diode
68 μH, 1 A inductor
180 kΩ, 1%, 0805
390 mΩ, 1%, 0805
22 nF
C2
390 mΩ
R2
D1
68 μH
L
1
LED1
LED2
LED3
Manufacturer - Part Number
Taiyo Yuden, TDK
Taiyo Yuden - NR 6045T 680M
A6210

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A6210GEUTR-T Summary of contents

Page 1

Features and Benefits ▪ User-configurable on-time, achieving switching frequencies up to 2.0 MHz ▪ Brightness control through PWM of DIS pin ▪ Minimal external components required ▪ No output capacitor required ▪ Wide input voltage range ...

Page 2

... A6210 Selection Guide Part Number Packing A6210GEUTR-T 1500 pieces per reel Absolute Maximum Ratings (reference to GND) Characteristic VIN Pin Supply Voltage LX Pin Switching Node Voltage ISEN Pin Current Sense Voltage DIS Pin Disable Voltage TON Pin On-Time Voltage Operating Ambient Temperature ...

Page 3

A6210 1.0 μF R1 180 kΩ TON DIS Switch Closed = On VIN UVLO Linear OK TSD Switching Frequency = 1.4 MHz All capacitors are X5R or X7R ceramic Resistor R2 should be surface mount, ...

Page 4

A6210 ELECTRICAL CHARACTERISTICS Characteristic General V Quiescent Current IN Current Sense Voltage On-Time Tolerance Minimum On-Time Period Minimum Off-Time Period Start-Up Time Buck Switch On-Resistance Input DIS Input Voltage Threshold DIS Open-Circuit Voltage DIS Input Current Protection VIN Undervoltage Shutdown ...

Page 5

A6210 Basic Operation The A6210 is a buck regulator that utilizes valley current mode control. The on-time is set by the amount of current that flows into the TON pin. This is determined by the value of the TON resistor ...

Page 6

A6210 of physically small, low value inductors. An output capacitor is not necessary either to reduce the ripple current or to close the control loop. High efficiencies are achieved via drive circuits optimized to minimize switching losses and the current ...

Page 7

A6210 off-time of 350 ns. A minimum off-time is required to ensure the bootstrap supply operates correctly. It can be shown that: 1 – (min) off where t is 350 ns maximum. off Therefore: 1 ...

Page 8

A6210 Figure 3. Switching voltage versus current through L1 and LED string I LED V LX Ch1 Ch2 t (A) Figure 4. PWM on DIS pin at 400 Hz: (A) narrow duty cycle, (B) wide duty cycle ...

Page 9

A6210 BOOT VIN C1 1.0 μ 6210 910 kΩ 910 kΩ ISEN TON PWM or Switch DIS SGND NC GND Channel 1 – Current through inductor and LED Assembly, Channel 2 – ...

Page 10

A6210 BOOT VIN C1 1.0 μ 6210 310 kΩ ISEN TON PWM or Switch DIS SGND NC GND Channel 1 – Current through inductor and LED Assembly, Channel 2 – Main switching voltage ...

Page 11

A6210 4.00 ±0. 17X 0.08 C 0.30 ±0.05 0.65 0.40 ±0. 2.70 Copyright ©2008-2009, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. patents ...

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