zxld1601 Zetex Semiconductors plc., zxld1601 Datasheet - Page 2

• Manufacturer Part Number: zxld1601
• Description: Zxld1601 - Adjustable Dc-dc Boost Converter With Internal Switch In Sc70
• Manufacturer: Zetex Semiconductors plc.

ELECTRICAL CHARACTERISTICS:
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
2 Nominal ‘on’ time (TONnom ) is defined by the input voltage (V
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
ABSOLUTE MAXIMUM RATINGS
(Voltages to GND unless otherwise stated)
Input voltage (V
LX output voltage (V
Switch output current (I
Power dissipation (PD)
Operating temperature (T
Storage temperature (T
Junction temperature (Tj
ZXLD1601
Symbol
V
I
V
R
R
f
T
T
I
R
I
V
V
V
I
I
T
IN
LX
LXpk
LX(leak)
ENL
ENH
EN(hold)
OFF
ON
IN
FB
1
2
LX
OUT
ENH
ENL
guaranteed by design, characterization and process control.
T
maintained during dc PWM mode operation.
ONnom
S E M I C O N D U C T O R S
(2)
(3)
= {I
LX(pkdc)
Parameter
Input voltage
Supply current
FB pin control voltage
Internal resistor from FB pin
to GND pin
Internal resistor from FB pin
to V
Operating frequency
LX output ‘OFF’ time
LX output ‘ON’ time
Switch peak current limit
Switch ‘On’ resistance
Switch leakage current
Controller default output
voltage
EN pin high level Input voltage Device active
EN pin low level Input voltage Device in shutdown
EN pin low level input current
EN pin high level input current V
EN pin turn off delay
SENSE
IN
x L/V
)
Quiescent
Shutdown
IN
LX
pin
} +200ns
)
ST
LX
OP
)
MAX
)
)
)
7V
30V
500mA
300mW
-40 to 85°C
-55 to 150°C
125°C
(Test conditions: V
V
V
FB pin floating
Conditions
L=10 H, V
L=10 H, V
V
V
V
EN
EN
LX
EN
EN
EN
=20V
= V
= 0V
=0V
=VIN
switched from high to low
IN
IN
, I
), coil inductance (L) and peak current (I
OUT
OUT
LX
2
= 0, Output not switching
=28V, 5mA load
=28V, 5mA load
IN
=V
EN
=3V, T
AMB
=25°C unless otherwise stated
LXpkdc
0.98
Min
350
1.5
2.5
26
) according to the expression:
ISSUE 3 - AUGUST 2004
120
3.45
1.75
Typ
<10
135
600
500
320
60
Max
-100
1.07
100
100
V
5.5
0.4
28
5
1
1
IN
(1)
)
Units
M
kHz
mA
µA
nA
µA
nA
k
ns
µs
µs
V
V
V
V
V
A