Typical operating characteristics (continued) – Rainbow Electronics MAX1664 User Manual
Page 5
MAX1664
Active-Matrix Liquid Crystal Display
(AMLCD) Supply
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(f
BPCLK
= 22.5kHz, FPLL = GND, L1 = 3.3µH, L2 = 4.7µH, T
A
= +25°C, unless otherwise noted.)
V
OUT2-
= -5V, I
LOAD
= 5mA, C
OUT2-
= 0.47
µ
F
A: V
OUT2-
, 200mV/div, AC COUPLED
B: V
IN
, 3V to 4V
V
OUT2-
LINE-TRANSIENT RESPONSE
A
B
MAX1664 TOC09
200mV/
div
500mV/
div
2ms/div
V
OUT1
= 5V, V
IN
= 3.3V, C
OUT1
= 20
µ
F
A: V
OUT1
, 50mV/div, AC COUPLED
B: I
OUT1
, 25mA TO 225mA, 100mA/div
V
OUT1
LOAD-TRANSIENT RESPONSE
A
B
MAX1664 TOC10
50mV/
div
100mA/
div
2ms/div
0
400
200
800
600
1200
1000
1400
0
20
30
10
40
50
60
70
80
90
INTERNAL FET ON-RESISTANCE
vs. TEMPERATURE
MAX1664 TOC 11
TEMPERATURE (°C)
INTERNAL FET ON-RESISTANCE (m
Ω
)
LX2N
LX2P
BPDRV N-CHANNEL
LX1
BPDRV P-CHANNEL
300
0
0.001
0.01
0.1
1
BPDRV RISE AND FALL TIME
vs. LOAD CAPACITANCE
MAX1664 TOC12
LOAD CAPACITANCE (
µ
F)
RISE/FALL TIME (ns)
100
200
250
50
150
C
LOAD
FROM
BPDRV TO GND
RISE TIME
FALL TIME
V
OUT1
= 5V, I
LOAD
= 250mA, C
OUT1
= 20
µ
F
A: V
OUT1
, 50mV/div, AC COUPLED
B: V
IN
, 3V to 4V
V
OUT1
LINE-TRANSIENT RESPONSE
A
50mV/
div
500mV/
div
2ms/div
B
MAX1664 TOC07
V
OUT2+
= 15V, I
LOAD
= 5mA, C
OUT2+
= 0.22
µ
F
A: V
OUT2+
, 200mV/div, AC COUPLED
B: V
IN
, 3V to 4V
V
OUT2+
LINE-TRANSIENT RESPONSE
A
B
MAX1664 TOC08
200mV/
div
500mV/
div
2ms/div