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ZXLD1615 Datasheet(PDF) 2 Page - Diodes Incorporated

Part # ZXLD1615
Description  ADJUSTABLE DC-DC BOOST CONVERTER WITH INTERNAL SWITCH IN
PDF  12 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1615 Datasheet(HTML) 2 Page - Diodes Incorporated

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ABSOLUTE MAXIMUM RATINGS
(Voltages to GND unless otherwise stated)
Input voltage (VIN)7V
LX output voltage (VLX)
30V
Switch output current (ILX)
500mA
Power dissipation (PD)
300mW
Operating temperature (TOP)
-40 to 85°C
Storage temperature (TST)
-55 to 150°C
Junction temperature (Tj MAX)
125°C
ZXLD1615
SEMICO NDUC TORS
ISSUE 3 - AUGUST 2004
2
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN
Input voltage
2.5
5.5
V
IIN
Supply current
Quiescent
Shutdown
VEN =VIN,ILX = 0, Output not switching
VEN =0V
60
<10
100
100
µA
nA
VFB
FB pin control voltage
0.98
1.07
V
fLX
Operating frequency
L=10 H, VOUT =28V, 5mA load
600
kHz
TOFF
LX output ‘OFF’ time
350
500
ns
TON
(2)
LX output ‘ON’ time
5µs
ILXpk
Switch peak current limit
L=10 H, VOUT =28V, 5mA load
320
mA
RLX
Switch 'On' resistance
1.75
ILX(leak)
Switch leakage current
VLX=20V
1
µA
VENH
EN pin high level Input voltage Device active
1.5
VIN
V
VENL
EN pin low level Input voltage
Device in shutdown
0.4
V
IENL
EN pin low level input current
VEN =0V
-100
nA
IENH
EN pin high level input current VEN =VIN
1
A
TEN(hold)
(3)
EN pin turn off delay
VEN switched from high to low
120
µs
T/T
PWM duty cycle range at
‘EN’ input for dc output
voltage control
10kHz<f< 100kHz, VENH =VIN
20
100
%
fLPF
Internal PWM low pass filter
cut-off frequency
4
kHz
ALPF
Filter attenuation
f=30kHz
52.5
dB
ELECTRICAL CHARACTERISTICS: (Test conditions: V
IN=VEN=3V, TAMB=25°C unless otherwise stated
(1)
)
NOTES:
1 Production testing of the device is performed at 25°C. Functional operation of the device over a –40°C to +85°C temperature range is
guaranteed by design, characterization and process control.
2 Nominal ‘on’ time (TONnom ) is defined by the input voltage (VIN), coil inductance (L) and peak current (ILXpkdc) according to the expression:
TONnom = {ILX(pkdc) x L/VIN} +200ns
3 This is the time for which the device remains active after the EN pin has been asserted low. This delay is necessary to allow the output to be
maintained during dc PWM mode operation.
4 The maximum PWM signal frequency during this mode of operation should be kept as low as possible to minimize errors due to the turn-off
delay



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