ZXLD1322DCCTC データシートの表示（PDF） - Diodes Incorporated.
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ZXLD1322DCCTC
Diodes Incorporated.
ZXLD1322DCCTC Datasheet PDF : 17 Pages
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A Product Line of
Diodes Incorporated
ZXLD1322
Electrical Characteristics (Test conditions: VIN = 4V, TAMB = 25°C unless otherwise stated(a))
DC-DC Converter Supply Parameters
Symbol
Parameter
VIN
Supply Voltage
VIN(Start)
VUV-
Supply voltage for start-up(b)
Under-voltage detection threshold
normal operation to start-up mode
VUV+
Under-voltage detection threshold
start-up mode to normal operation
Iq
Quiescent Current
ISTBY
VREF
TCO(REF)
Standby Current
Internal Reference Voltage
Internal Reference Temperature
Coefficient
Condition
Normal Operation
Start-up mode
VIN falling
VIN rising
Measured into VIN ADJ pin floating.
Excluding switch base current).
Measured into VIN. ADJ pin grounded
ADJ pin floating
2.5V<VIN<15V
Min.
2.5
1.2
480
Typ. Max. Unit
15
V
2.4
V
1.8
V
2.2
V
1.5
mA
12 20
µA
500 520 mV
50
ppm/K
Notes:
(a) Production testing of the device is performed at 25°C. Functional operation of the device and parameters specified from -40°C to +125°C are
guaranteed by design, characterization and process control.
(b) Between 1.2V and 2.2V the device will run in the Low Voltage Startup Mode (for details refer to section "Low Voltage Operation")
DC-DC Converter Input Parameters
Symbol
Parameter
VSENSE
Peak switch current sense voltage
VSENSE
(SU)
Peak switch current sense voltage in
start-up mode
ISENSE
Sense input current
CFB
VADJ
VADJ(th)
TCO
(VADJ)
RADJ
VADJ
(CLMP)
Control loop compensation capacitor
External DC control voltage applied to
ADJ pin to adjust output current
Switching threshold of ADJ pin
Temperature coefficient of VADJ(th)
Internal resistor between VREF and
ADJ
Clamp voltage on ADJ pin
Condition
Measured on ISENSE pin CFB pin
at 0V
Measured on ISENSE pin. Start-up
mode VIN = 1.2V
Measured into ISENSE with pin at
0V. CFB pin at 0V
DC brightness control mode
Standby state to normal operation
VADJ<550mV
100μA injected into ADJ pin
Min. Typ. Max. Unit
45 55 65 mV
10.5
mV
-15 -7
-1 µA
10
50
500 mV
26 28 30 mV
+0.3
%/K
100
kΩ
575
mV
DC-DC Converter Output Parameters
Symbol
Parameter
Toff(100) Discharge pulse width
Toff(10) Discharge pulse width
fLXMAX
Maximum operating frequency
fSU
Switching frequency in start-up mode
Condition
100% Output current
10% Output current
VIN = 1.2V
Min. Typ. Max. Unit
0.7
1.2
1.7
µs
4
8
12
µs
600
KHz
50
KHz
ZXLD1322
Document number: DS32166 Rev. 3 - 2
5 of 17
www.diodes.com
April 2010
© Diodes Incorporated
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