MAX1885EUP-T Maxim Integrated, MAX1885EUP-T Datasheet - Page 13

• Manufacturer Part Number: MAX1885EUP-T
• Description: LCD Drivers Quad-Output TFT LCD DC-DC Converter with Buffer
• Manufacturer: Maxim Integrated

Specifications of MAX1885EUP-T

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TSSOP-20
• Mounting Style: SMD/SMT

(Circuit of Figure 1, V
BUF+ = FLTSET = TGND = PGND = GND, T
Maxim Integrated
4OmA
5.00V
4.94V
100
60
80
40
20
0
0
DROPOUT (INTERNAL LINEAR REGULATOR)
1
A. I
B. V
V
IN
C
I
LDOOUT
LOAD-TRANSIENT RESPONSE NEAR
POWER-SUPPLY REJECTION RATIO
LDO
LDOOUT
= V
LDO
LDO
= 100µA TO 40mA, 40mA/div
= 5V, 20mV/div
= 40mA
+ 100mV
= 4.7µF
vs. FREQUENCY
10
FREQUENCY (kHz)
100µs/div
IN
100
= +3.3V, SHDN = IN, V
MAX1778 toc30
1000
A
B
A
= +25°C.)
0.01
Typical Operating Characteristics (continued)
100
5.0V
8.0V
1.0A
0.5A
0.1
10
MAX1778/MAX1880–MAX1885
1
0
0
A. V
B. V
C. I
Quad-Output TFT LCD DC/DC
MAIN
REGION OF STABLE C
LDOOUT
MAIN
INTERNAL LINEAR-REGULATOR
MAIN
= 0 TO 750mA, 500mA/div
= V
10
= 5V, I
vs. LOAD CURRENT
RIPPLE REJECTION
SUPL
= V
LDOOUT
= 8V, 200mV/div
I
STABLE REGION
LDOOUT
10µs/div
SUPP
20
= 40mA, 10mV/div
Converters with Buffer
(mA)
LDOOUT
= V
C
LDOOUT
30
SUPN
MAX1778 toc31
ESR
= 1µF
= V
40
A
B
C
SUPB
4OmA
5.00V
4.96V
2V
4V
2V
4V
2V
= V
0
0
0
A. V
B. V
C. V
A. I
B. V
V
SUPL
SUPL
LDO
SHDN
LDOOUT
MAIN
LDO
(INTERNAL LINEAR REGULATOR)
INTERNAL LINEAR-REGULATOR
= V
LOAD-TRANSIENT RESPONSE
= 100µA TO 40mA, 40mA/div
= 5V, 20mV/div
= 8V, R
= 0 TO 2V, 2V/div
LDO
= 5V, R
= 8V, BUF- = BUFOUT,
+ 500mV
MAIN
LDOOUT
STARTUP
400µs/div
100µs/div
= 40Ω, 2V/div
= 125Ω, 2V/div
MAX1778 toc32
MAX1778 toc29
13
A
B
C
A
B