RangeMAX™ LX1688
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright © 2001
Rev. 1.2, 2006-03-09
WWW.Microsemi .COM
Multiple Lamp CCFL Controller
TM
®
ELECTRICAL CHARACTERISTICS (CONTINUED)
LX1688
Parameter Symbol Test Conditions
Min Typ. Max
Units
STRIKE AND RAMP GENERATOR (CONTINUED)
Minimum PHA_SYNC-pin output current I
_PHA_SYNC
V
SLAVE
= 0V 10 ‘mA
Minimum RMP_RST-pin output current I
_RMP_RST
V
SLAVE
= 0V 10 mA
Minimum A_SYNC output pulse duty-cycle D
O_ASYNC
V
SLAVE
= 0V 49 50 %
Minimum A_SYNC input pulse duty-cycle D
I_ASYNC
V
SLAVE
= V
DD
48 50 %
Minimum RMP_RST output pulse duty-cycle D
O_RST
V
SLAVE
= 0V 10 17 %
Minimum RMP_RST input pulse duty-cycle D
I_RST
V
SLAVE
= V
DD
5 %
OUTPUT BUFFER
Output Sink Current I
SK_OUTBUF
V
AOUT
,
BOUT
= 1V
V
DD
= 5.5V
100 ‘mA
Output Source Current I
S_OUTBUF
V
AOUT
,
BOUT
= 4.5V
V
DD
= 5.5V
100 ‘mA
Output Sink Current I
SK_OUTBUF
V
AOUT
,
BOUT
= 1V, V
DD
= 3V 50 ‘mA
Output Source Current I
S_OUTBUF
V
AOUT
,
BOUT
= 2V, V
DD
= 3V 50 ‘mA
Output Sink Current I
SK_OUTBUF
V
AOUT
,
BOUT
= 1V,
V
DD
= 5.5V 100 ‘mA
PWM
VSNS threshold voltage V
TH_VSNS
1.2 1.25 1.3 V
VCOMP Discharge Current I
D_VCOMP
4 ‘mA
IAMP transconductance G
M_IAMP
ΔI
SNS
= 0.2V 100 200 500 µmho
VAMP, IAMP output source current I
S_IAMP
V
COMP
, I
COMP
= 0 75 µA
VAMP, IAMP output sink current I
SK_IAMP
V
COMP
, I
COMP
=V
DD
75 µA
ICOMP discharge current I
D_ICOMP
10 ‘mA
VAMP transconductance G
M_ICMP
ΔV
SNS
= 0.1V 200 500 800 µmho
ICOMP-to-output propagation delay T
D_ICOMP
1100 nS
BIAS
Voltage at Pin I_R V
_IR
0.95 1.05 V
Pin I_R max. source current I
MAX_IR
50 µA
Power-on Reset Pulse Width T
POR
C
POR
=.1uF 31 mS
Minimum V
DDSW
sourcing Current I
MIN_VDDSW
(V
DD
– V
DDSW
) < 0.2V 10 25 ‘mA
V
DDSW
Off Current I
OFF_VDDSW
V
ENABLE
= 0.8V, V
BEPOL
= V
DD
V
DDSW
= 0V
1 15 µA
GENERAL
Operating Current I
DD
V
DD
= V
DD_P
= 5V 5.5 8 mA
Output buffer operating current I
DD_P
V
OLSNS
= V
DD
= V
DD_P
= 5V,
C
A
= C
B
= 1000pF
2 4 mA
ENABLE logic threshold V
TH_EN
0.8 1.7 2.4
V
ENABLE threshold hysteresis V
TH_EN
0.2
V
I
DD_SLEEP
V
ENABLE
= 0.8V
(V
BEPOL
= V
DD
or float)
20 50
Sleep-mode current (see table-1 for Pin
ENABLE polarity)
I
DD_SLEEP
V
ENABLE
= 2.5V
(V
BEPOL
= V
DD
or float)
20 50
I
DD_SLEEP
V
ENABLE
= 0.8V
(V
BEPOL
= V
SS
)
20 300
VDD_P Leakage in Sleep Mode
I
DD_SLEEP
V
ENABLE
= 2.5V
(V
BEPOL
= V
SS
)
20 300
µA
UVLO threshold V
TH_UVLO
Rising turn-on threshold 2.6 2.8 2.9 V
UVLO hysteresis V
H_UVLO
Falling turn-off hysteresis 190 mV
E
E
L
L
E
E
C
C
T
T
R
R
I
I
C
C
A
A
L
L
S
S
