ZXLD1374EST20TC Diodes Zetex, ZXLD1374EST20TC Datasheet - Page 6

• Manufacturer Part Number: ZXLD1374EST20TC
• Description: IC LED DVR BUCK BOOST 20TSSOP
• Manufacturer: Diodes Zetex
• Series: -r

Specifications of ZXLD1374EST20TC

• Constant Current: -
• Constant Voltage: -
• Topology: Low Side, PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Automotive, General Purpose
• Type - Secondary: High Brightness LED (HBLED)
• Frequency: 300kHz ~ 1MHz
• Voltage - Supply: 6.3 V ~ 60 V
• Voltage - Output: 60V
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
• Operating Temperature: -40°C ~ 125°C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: ZXLD1374EST20TCDITR

ZXLD1374
Document number: DS35032 Rev. 2 - 2
Electrical Characteristics (
Notes: 9. In the event of more than one fault/warning condition occurring, the higher priority condition will take precedence. E.g. ‘Excessive coil current’
Output Parameters
Low side switch output (LX pins tied together)
LED Thermal control circuit (T
I
R
V
Symbol
R
FLAGOFF
V
V
V
t
I
STATUS
STATUS
t
t
STALL
I
LX-LG
DS(ON)
FLAGL
TADJH
PDHL
PDLH
t
t
TADJL
TADJ
LXR
LXF
10. Flag is asserted if V
11. With the device still in switching mode the LX pin has an over-voltage detection circuit connected to it with a resistance of approximately 1MΩ.
12. If t
and ‘Out of regulation’ occurring together will produce an output of 0.9V on the STATUS pin. The voltage levels on the STATUS output assume
the Internal regulator to be in regulation and V
the minimum value of 6V.
switched to its nominal operating voltage, before operation is allowed to resume. Restart cycles will be repeated automatically until the operating
conditions are such that normal operation can be sustained. If t
ON
FLAG pin low level output voltage
FLAG pin open-drain leakage current
STATUS Flag no-load output voltage
(Note 9)
Output impedance of STATUS output
Low side switch leakage current
LX pin MOSFET on resistance
Propagation delay high-low
Propagation delay low-high
LX output rise time
LX output fall time
Time to assert ‘STALL’ flag and
warning on STATUS output
(Note 12)
exceeds t
Upper threshold voltage
Lower threshold voltage
TADJ pin Input current
STALL
, LX turns off and then an initiate a restart cycle occurs. During this phase, ADJ is grounded internally and the SHP pin is
SHP
Parameter
<2.5V or V
ADJ
SHP
) parameters
Test conditions: V
>3.5V
60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST
ADJ
<=V
REF
Output sinking 1mA
V
Normal operation
Out of regulation (V
(Note 10)
V
Switch stalled (t
LX over-voltage state (V
Over-temperature (T
Excess sense resistor current
(V
Excessive switch current (I
Normal operation
Output stage off, V
(Note 11)
I
V
C
LX low or high
Onset of output current reduction
(V
Output current reduced to <10% of
set value (V
V
. A reduction of the voltage on the STATUS pin will occur when the voltage on V
LX
FLAG
IN
SENSE
www.diodes.com
L
TADJ
SENSE
TADJ
IN
= 680pF, R
= 1.5A (t
under-voltage (V
= V
OFF
=40V
= 1.25V
6 of 37
falling)
AUX
= 225mV ± 30%,
exceeds t
> 0.375V)
LED DRIVER CONVERTER WITH AEC-Q100
= 12V, T
ON
TADJ
Conditions
L
< 100µs)
= 120Ω
STALL
ON
falling)
LX
A
SHP
, the switch will remain off until normal operation is possible.
or t
IN
J
= 25°C, unless otherwise specified.)
= 60V
> 125°C)
< 5.6V)
OFF
out of range)
LX
> 100µs)
SW
>60V)
Diodes Incorporated
>1.5A)
A Product Line of
Min
560
380
4.2
3.3
3.3
3.3
2.4
1.5
0.6
0.6
Typ
131
208
100
625
440
4.5
3.6
3.6
3.6
2.7
1.8
0.9
0.9
0.5
10
60
86
12
© Diodes Incorporated
Max
ZXLD1374
170
690
500
0.5
4.8
3.9
3.9
3.9
3.0
2.1
1.2
1.2
0.8
1
1
March 2011
IN
is near
Units
mV
mV
µA
kΩ
µA
µA
ns
ns
ns
ns
µs
Ω
V
V