OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

ZXLB1600X10TA

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
DESCRIPTION
The ZXLB1600 inductive switching boost converter
accepts an input voltage of between 1.6V and 5.5V and
provides an adjustable output voltage of up to 28V for
LCD and OLED bias. The device contains an output
switch and a second switch to isolate the coil from the
input to provide true isolation in shutdown mode. The
output can be adjusted by means of an externally
applied dc voltage, a PWM control signal, or external
feedback resistors and can supply typically 10mA of
output current at maximum output voltage. Higher
current is available at lower output voltages.
The input voltage range accepts a number of battery
solutions, including dual dry cellandsingle Li-Ion cells
and PFM operation mode allows the output to be
regulated with high efficiency under light or no load
conditions. The switching frequency range permits the
use of miniature surface mount inductors.
A low battery comparator is provided to indicate when
the input voltage has fallen to within ±2% of a preset
threshold. This threshold is set internally , but can be
adjusted externally to any voltage within the supply
voltage range.
FEATURES
•
Wide input voltage range: 1.6 to 5.5V
•
Adjustable output voltage up to 28V, using PWM
or analog control voltage
•
Internal PWM filter
•
True shutdown (output isolated from input)
•
Internal output switch and current sense
•
Low quiescent current: (75␮A max)
•
5␮A (max) shutdown current (including low
battery comparator)
•
Up to 500kHz switching frequency
•
High efficiency
•
Small MSOP10 package
•
Low external component count
APPLICATIONS
•
PDAs
•
Mobile phones - OLED sub displays
•
Digital cameras
•
Portable internet appliances
•
Palmtop computers
•
GPS terminals
ZXLB1600
ISSUE 3 - SEPTEMBER 2003
SEMICONDUCTORS
1
LCD AND OLED BIAS BOOST CONVERTER - STN, CSTN SCREENS
TYPICAL APPLICATION CIRCUIT
LAST TIME BUY
Closest Alternative Part AP5727WUG-7
ABSOLUTE MAXIMUM RATINGS
(Voltages to GND unless otherwise stated)
Output voltage 30V
Input voltage 7V
Switch output current 500mA
Power dissipation 800mW
Operating temperature 0 to 70⬚C
Storage temperature -55 to 125⬚C
Junction temperature 150⬚C
ZXLB1600
ISSUE 3 - SEPTEMBER 2003
SEMICONDUCTORS
2
Symbol Parameter Conditions Min Typ Max Units
General
V
IN
Input voltage
(1)
1.6 5.5 V
I
IN
Supply current Shutdown
(2)
V
EN
= 0V 3.5 5 ␮A
Quiescent V
EN
=V
IN
,I
OUT
= 0V, Not
switching
30 75 ␮A
Isolating switch
R
ISO
‘On’ resistance V
EN
=V
IN
0.7 2 ⍀
I
ISO
Leakage current V
EN
=0V 1 ␮A
V
SW(max)
Maximum voltage on SW pin
during normal operation
V
IN
+0.5 V
LX Switch
I
LX
Switch peak current limit
(3)
0.15 0.35 A
R
LX
‘On’ resistance 0.5 2 ⍀
I
LX(leak)
Switch leakage current 1 ␮A
V
LX
Operating voltage on LX pin -0.5 30 V
Controller output
V
OUT
Output voltage range V
IN
28 V
I
OUT
Output current Lx = 22␮H, V
OUT
= 28V 5 10 mA
⌬V
LNR
Line regulation I
OUT
= 1mA, 2V < V
IN
<5.5V 0.1 %/V
⌬V
LDR
Load regulation V
OUT
= 28V, 100␮A<I
OUT
< 5mA
0.15 %/mA
f
LX
Operating frequency 500 kHz
T
ON
Output ‘ON’ time LX output low 10 ␮s
T
OFF
Output ‘OFF’ time LX output off 0.9 µs
␩ Efficiency
(4)
Lx=22␮H, V
OUT
= 20V 80 %
ELECTRICAL CHARACTERISTICS
Test conditions unless otherwise stated: V
IN
= 3.0V, T
AMB
= 25°C
Note:
1) Minimum supply voltage should be maintained above 2V for operation at minimum temperature.
2) Shutdown current includes the operating current for the low battery comparator, which remains active in shutdown mode.
3) This is the dc value. The dynamic value may exceed 350mA during normal operation, due to switching delays, coil inductance and supply
voltage.
4) Efficiency is dependent upon the choice of external components, input/output voltages and load current.(see typical operating curves).
LAST TIME BUY
Closest Alternative Part AP5727WUG-7
ZXLB1600
ISSUE 3 - SEPTEMBER 2003
3
SEMICONDUCTORS
Symbol Parameter Conditions Min Typ Max Units
Output voltage control by dc voltage applied to ‘ADJ’ pin
V
ADJ (nom)
Internal reference voltage ‘ADJ’ pin floating, ‘EN’= V
IN
1.23 V
Temperature coefficient of V
ADJ
40 ppm/⬚C
V
ADJ
External overdrive voltage range
on ‘ADJ’ pin for output voltage
control
0.5 V
ADJ
(NOM)
V
I
ADJ
Input current into V
ADJ
pin 0.5<V
ADJ
<V
ADJ (NOM)
-10 ␮A
V
SENSE
Default Output voltage ‘ADJ’ pin floating, ‘EN’= V
IN
27 29 V
Output voltage control by PWM signal applied to ‘EN’ input
∆T/T
PWM duty cycle range at ‘EN’
input
10kHz
(5)
< f < 100kHz, V
ENH
=V
IN
40 100 %
f
LPF
Internal low pass filter cut-off
frequency
4 kHz
A
LPF
Filter attenuation f=30kHz 52.5 dB
Internal voltage setting resistors for output voltage
R1 Ref. Block diagram 317
k⍀
R2 6.93 M⍀
Enable input
V
ENL
Low level Input voltage Device in shutdown 0.4 V
V
ENH
High level Input voltage Device active 1.4 Vin V
I
ENL
Low level input current V
EN
=0V -100 nA
I
ENH
High level input current V
EN
=V
IN
100 nA
T
EN(hold)
Enable active hold time
(6)
V
EN
switched from high to low 120 ␮s
Low-battery detection circuit
V
LBT
Detection threshold V
IN
falling 1.94 2.02 V
Temperature coefficient of V
BLT
20 ppm/⬚C
V
BLHYS
Hysteresis V
IN
rising 20 mV
Ref
(LBD)
Internal reference voltage 1.21 V
V
LBT (max)
Maximum voltage on LBT pin V
in
-0.5 V
I
BLOL
Low level output current Output ‘on’ 1 mA
V
BLOL
Low level output voltage I
BLOL
= 0.5mA 0.4 V
I
BLOH
High level output current Output ‘off’ , V
BLOH
= 29V 2 ␮A
V
BLOH
High level output voltage Output ‘off’ 29 V
Internal voltage setting resistors for low-battery detection circuit
R3 Ref. block diagram 1.56 M⍀
R4 2.44
M⍀
ELECTRICAL CHARACTERISTICS (Cont.)
Test conditions unless otherwise stated: V
IN
= 3.0V, T
AMB
= 25°C
Note:
5) This is the minimum PWM frequency to maintain a continuous output. Lower frequencies can be used, but will result in gated operation of
the device i.e. device enters shutdown when EN is low (see Note 6).
6) This is the time for which the device remains active after the EN pin has been driven low. This delay allows a continuous output to be
maintained during PWM mode operation at frequencies higher than 10kHz.
LAST TIME BUY
Closest Alternative Part AP5727WUG-7
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ZXLB1600X10TA

Mfr. #:
Buy ZXLB1600X10TA
Manufacturer:
Diodes Incorporated
Description:
LCD Drivers 28V LCD Bias Boost
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet