ZXLD1370_11 DIODES [Diodes Incorporated], ZXLD1370_11 Datasheet - Page 6

• Manufacturer Part Number: ZXLD1370_11
• Description: 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER
• Manufacturer: DIODES [Diodes Incorporated]

ZXLD1370
Document number: DS32165 Rev. 3 - 2
Electrical Characteristics
Notes:
Output Parameters
Driver output (PIN GATE)
LED Thermal control circuit (TADJ) parameters
V
V
I
I
V
R
V
Symbol
TADJ
FLAGOFF
V
V
V
TADJH
TADJL
t
GATECL
STATUS
STATUS
I
STALL
GATEH
FLAGL
GATEL
GATE
5. In the event of more than one fault/warning condition occurring, the higher priority condition will take precedence. E.g. ‘Excessive coil current’ and
6. Flag is asserted if V
7. GATE is switched to the supply voltage V
8. GATE is switched to PGND by an NMOS transistor
9. If t
off until normal operation is possible.
Internal regulator to be in regulation and V
repeated automatically until the operating conditions are such that normal operation can be sustained. If t
‘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
minimum value of 6V.
internally to prevent 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
FLAG pin low level output voltage
FLAG pin open-drain leakage current
STATUS Flag no-load output voltage
(Note 5)
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 9)
ON
Upper threshold voltage
Lower threshold voltage
TADJ pin Input current
exceeds t
STALL
, the device will force GATE low to turn off the external switch and then initiate a restart cycle. During this phase, ADJ is
SHP
<2.5V or V
Parameter
SHP
(Continued)
>3.5V
AUX
ADJ
<=V
for low values of V
REF
. A reduction of the voltage on the STATUS pin will occur when the voltage on V
(Test conditions: V
Output sinking 1mA
V
Normal operation
Out of regulation (V
(Note 6)
V
Switch stalled (t
Over-temperature (T
Excess sense resistor current
(V
Normal operation
No load Sourcing 1mA
(Note 7)
Sinking 1mA, (Note 8)
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
FLAG
IN
IN
www.diodes.com
TADJ
SENSE
TADJ
= V
under-voltage (V
= 1mA
=40V
AUX
= 1.25V
6 of 35
AU X
falling)
> 0.32V)
(i.e. between 6V and approximately 12V). For V
= V
TADJ
Conditions
ISM
ON
falling)
IN
= 18V
= V
SHP
or t
IN
J
> 125°C)
G
AUX
< 5.6V)
OFF
out of range)
= 10nC and
= 12V, T
> 100µs)
Diodes Incorporated
A Product Line of
A
= 25°C, unless otherwise specified.)
OFF
Min
560
380
4.2
3.3
3.3
3.3
1.5
0.6
10
exceeds t
AUX
±300
12.8
Typ
>12V, GATE is clamped
100
625
440
4.5
3.6
3.6
3.6
1.8
0.9
STALL
10
11
, the switch will remain
© Diodes Incorporated
Max
ZXLD1370
170
690
500
4.8
3.9
3.9
February 2011
0.5
3.9
2.1
1.2
0.5
15
1
1
IN
is near the
Units
mA
mV
mV
kΩ
µA
µA
µs
V
V
V
V
V