ZXLD1371QESTTC Diodes Inc. / Zetex, ZXLD1371QESTTC Datasheet - Page 6

• Manufacturer Part Number: ZXLD1371QESTTC
• Description: MOSFET LED Controller TSSOP TSSOP-16EP T&R 2.5K
• Manufacturer: Diodes Inc. / Zetex

Specifications of ZXLD1371QESTTC

• Rohs: yes

Electrical Characteristics
Notes:
ZXLD1371
Document number: DS35436 Rev. 1 - 2
Output Parameters
Driver output (PIN GATE)
LED Thermal control circuit (T
I
TADJ
I
V
R
V
Symbol
V
FLAGOFF
V
V
V
V
t
STATUS
STATUS
GATECL
I
STALL
GATEH
GATEL
GATE
TADJH
FLAGL
TADJL
10. In the event of more than one fault/warning condition occurring, the higher priority condition will take precedence.
11. Flag is asserted if V
12. GATE is switched to the supply voltage V
13. GATE is switched to PGND by an NMOS transistor
14. If t
For example ‘Excessive coil current’ and ‘Out of regulation’ occurring together will produce an output of 0.9V on the STATUS pin.
These STATUS pin voltages apply for an input voltage to V
therefore may not report the correct status. For 5.4V < V
Buck-boost modes an over-current status may be indicated when operating at high boost ratios – this due to the feedback loop increasing
the sense voltage.
For more information see the Application Information section about Flag/Status levels.
it exceeding 15V.
grounded internally and the SHP pin is 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
remain off until normal operation is possible.
FLAG pin low level output voltage
FLAG pin open-drain leakage current
STATUS Flag no-load output voltage
(Note 10)
Output impedance of STATUS output
High level output voltage
Low level output voltage
High level GATE CLAMP voltage
Dynamic peak current available during
rise or fall of output voltage
Time to assert ‘STALL’ flag and
warning on STATUS output
(Note 14)
Upper threshold voltage
Lower threshold voltage
T
ON
ADJ
exceeds t
pin Input current
STALL
SHP
, the device will force GATE low to turn off the external switch and then initiate a restart cycle. During this phase, ADJ is
< 1.5V or V
Parameter
ADJ
) parameters
(cont.)
SHP
> 2.5V
AUX
(Test conditions: V
for low values of V
Output sinking 1mA
V
Normal operation
Out of regulation (V
(Note 11)
V
Switch stalled (t
Over-temperature (T
Excess sense resistor current
(V
Normal operation
No load Sourcing 1mA
(Note 12)
Sinking 1mA, (Note 13)
V
I
Charging or discharging gate of
external switch with Q
400kHz
GATE low or high
Onset of output current reduction
(V
Output current reduced to <10% of
set value (V
V
GATE
www.diodes.com
FLAG
IN
IN
TADJ
IN
SENSE
TADJ
= V
under-voltage (V
< 7.5V the flag pin still reports any error by going low. At low V
IN
= 1mA
6 of 42
of 7.5V < V
= 40V
= 1.25V
AU X
falling)
AUX
> 0.32V)
= V
(5V ≤ V
IN
TADJ
Conditions
= V
ISM
IN
ON
< 60V. Below 7.5V the STATUS pin voltage levels reduce and
falling)
AUX
AUX
= 18V
SHP
or t
IN
J
= 12V, T
≤ ~12V). For V
> 125°C)
G
< UVLO)
OFF
out of range)
= 10nC and
> 100µs)
Diodes Incorporated
A
A Product Line of
= 25°C, unless otherwise specified.)
AUX
> 12V, GATE is clamped internally to prevent
OFF
Min
560
380
4.2
3.3
3.3
3.3
1.5
0.6
10
exceeds t
±300
12.8
Typ
100
625
440
4.5
3.6
3.6
3.6
1.8
0.9
10
11
STALL
IN
in Boost and
© Diodes Incorporated
, the switch will
February 2012
Max
ZXLD1371
170
690
500
4.8
3.9
3.9
3.9
2.1
1.2
0.5
0.5
15
1
1
Units
mA
mV
mV
µA
kΩ
µA
µs
V
V
V
V
V