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ZXLD1370Q PDF даташит

Спецификация ZXLD1370Q изготовлена ​​​​«Diodes» и имеет функцию, называемую «AUTOMOTIVE COMPLIANT 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER».

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Номер произв ZXLD1370Q
Описание AUTOMOTIVE COMPLIANT 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER
Производители Diodes
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ZXLD1370Q Даташит, Описание, Даташиты
ZXLD1370Q
AUTOMOTIVE COMPLIANT 60V HIGH ACCURACY BUCK/
BOOST/BUCK-BOOST LED DRIVER-CONTROLLER
Description
The ZXLD1370Q is an LED driver controller IC for driving external
MOSFETs to drive high current LEDs. It is a multi-topology controller
enabling it to efficiently control the current through series connected
LEDs. The multi-topology enables it to operate in buck, boost and
buck-boost configurations.
The 60V capability coupled with its multi-topology capability enables it
to be used in a wide range of applications and drive in excess of
15 LEDs in series.
Pin Assignments
TSSOP-16EP
The ZXLD1370Q is a modified hysteretic controller using a patent
pending control scheme providing high output current accuracy in all
three modes of operation. High-accuracy dimming is achieved
through DC control and high frequency PWM control.
The ZXLD1370Q uses two pins for fault diagnosis. A flag output
highlights a fault, while the multi-level status pin gives further
information on the exact fault.
The ZXLD1370Q has been qualified to AEC-Q100 Grade 1 and is
automotive grade supporting PPAPs.
Features
0.5% Typical Output Current Accuracy
6V to 60V Operating Voltage Range
LED Driver Supports Buck, Boost and Buck-Boost Configurations
Wide Dynamic Range Dimming
20:1 DC Dimming
1000:1 Dimming Range at 500Hz
Up to 1MHz Switching
High Temperature Control of LED Current Using TADJ
Available in Thermally Enhanced TSSOP-16EP Package with
Green Molding Compound
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Automotive Compliant
Qualified to AEC-Q100 Grade 1 and TS16949 Certification
Supports PPAP Documents (Note 4)
Typical Applications Circuit
VIN 8V
to 18V
C1
4.7µF
RGI2
62k
R4
RGI1 2k
51k
TH1
10k
GND
I LED = 1A
R1
0R1
VAUX VIN
PWM
ISM
L1
33mH
LED 1
to 4
GI SD1
PSD3100
ADJ GATE
Q1
REF
FLAG
DMN6068LK3
TADJ
SHP
C2
100pF
STATUS
SGND PGND
U1
ZXLD1370
Thermally connected
COUT
4.7µF
Buck-Boost Diagram Utilizing Thermistor and TADJ
Notes: 1.
2.
3.
4.
No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the
same, except where specified. For more information, please refer to http://www.diodes.com/quality/product_compliance_definitions/.
ZXLD1370Q
Document number: DS37117 Rev. 1 - 2
1 of 37
www.diodes.com
August 2015
© Diodes Incorporated









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ZXLD1370Q Даташит, Описание, Даташиты
Functional Block Diagram
LOAD
D
VIN RS
L
R1
R2
VAUX VIN
ISENSE
FLAG
STATUS
Error
report
Fast
current
monitor
TADJ
Accurate
current
monitor
REF
Reference
GI
ADJ
Error amp
-
Demand
current
source
Frequency &
hysteresis
control
VAUX
COMPIN
+
-
Gate
driver
PWM
SGND
PGND
ZXLD1370Q
Pin Descriptions
Pin Name Pin
ADJ
REF
TADJ
SHP
1
2
3
4
STATUS
5
Type
(Note 5)
I
O
I
I/O
O
Function
Adjust input (for DC output current control).
Connect to REF to set 100% output current.
Drive with dc voltage (125mV<VADJ< 2.5V) to adjust output current from 10% to 200% of set value.
The ADJ pin has an internal clamp that limits the internal node to less than 3V. This provides some
failsafe should they get overdriven.
Internal 1.25V reference voltage output
Temperature Adjust input for LED thermal current control
Connect thermistor/resistor network to this pin to reduce output current above a preset temperature
threshold.
Connect to REF to disable thermal compensation function. (See section on thermal control.)
Shaping capacitor for feedback control loop
Connect 100pF ±20% capacitor from this pin to ground to provide loop compensation.
Operation status output (analog output)
Pin is at 4.5V (nominal) during normal operation.
Pin switches to a lower voltage to indicate specific operation warnings or fault conditions. (See section
on STATUS output.)
Status pin voltage is low during shutdown mode.
Note: 5. Type refers to whether or not pin is an Input, Output, Input/Output or power supply pin.
ZXLD1370Q
Document number: DS37117 Rev. 1 - 2
2 of 37
www.diodes.com
August 2015
© Diodes Incorporated









No Preview Available !

ZXLD1370Q Даташит, Описание, Даташиты
ZXLD1370Q
Pin Descriptions (cont.)
Pin Name
SGND
PGND
N/C
N/C
GATE
Pin
6
7
8
9
10
VAUX
11
VIN
ISM
FLAG
12
13
14
PWM
15
GI 16
EP PAD
Type
(Note 5)
P
P
-
O
P
P
I
O
I
I
P
Function
Signal ground (Connect to 0V)
Power ground - Connect to 0V and pin 8 to maximize copper area
Not Connected internally recommend connection to pin 7, (PGND), to maximize PCB copper for
thermal dissipation
Not Connected internally recommend connection pin 10 (GATE) to permit wide copper trace to gate
of MOSFET
Gate drive output to external NMOS transistor connect to pin 9
Auxiliary positive supply to internal switch gate driver.
Connect to VIN, or auxiliary supply from 6V to 15V supply to reduce internal power dissipation (Refer
to application section for more details)
Decouple to ground with capacitor close to device (refer to Applications section)
Input supply to device (6V to 60V).
Decouple to ground with capacitor close to device (refer to Applications section)
Current monitor input. Connect current sense resistor between this pin and VIN
The nominal voltage across the resistor is 225mV
Flag open drain output
Pin is high impedance during normal operation
Pin switches low to indicate a fault, or warning condition
Digital PWM output current control
Pin driven either by open Drain or push-pull 3.3V or 5V logic levels.
Drive with frequency higher than 100Hz to gate output ‘on’ and ‘off’ during dimming control.
The device enters standby mode when PWM pin is driven with logic low level for more than 15ms
nominal (Refer to application section for more details)
Gain setting input
Used to set the device in Buck mode or Boost, Buck-boost modes
Connect to ADJ in Buck mode operation
For Boost and Buck-boost modes, connect to resistive divider from ADJ to SGND. This defines the ratio
of switch current to LED current (see application section). The GI pin has an internal clamp that limits
the internal node to less than 3V. This provides some failsafe should they get overdriven
Exposed paddle. Connect to 0V plane for electrical and thermal management
Absolute Maximum Ratings (Note 6) (Voltages to GND, unless otherwise specified.)
Symbol
VIN
VAUX
VISM
VSENSE
VGATE
IGATE
VFLAG
VPWM, VADJ,
VTADJ, VGI
TJ
TST
Parameter
Input Supply Voltage Relative to GND
Auxiliary Supply Voltage Relative to GND
Current Monitor Input Relative to GND
Current Monitor Sense Voltage (VIN-VISM)
Gate Driver Output Voltage
Gate Driver Continuous Output Current
Flag Output Voltage
Other Input Pins
Maximum Junction Temperature
Storage Temperature
Rating
-0.3 to +65
-0.3 to +65
-0.3 to +65
-0.3 to +5
-0.3 to +20
18
-0.3 to 40
-0.3 to +5.5
+150
-55 to +150
Unit
V
V
V
V
V
mA
V
V
°C
°C
Note:
6. For correct operation, SGND and PGND should always be connected together.
Caution:
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at conditions between maximum recommended operating conditions and absolute maximum ratings is not implied.
Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.
ZXLD1370Q
Document number: DS37117 Rev. 1 - 2
3 of 37
www.diodes.com
August 2015
© Diodes Incorporated










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Номер в каталогеОписаниеПроизводители
ZXLD137060V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLERDiodes
Diodes
ZXLD1370QAUTOMOTIVE COMPLIANT 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLERDiodes
Diodes

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