MAX1778EUG+ Maxim Integrated Products, MAX1778EUG+ Datasheet - Page 13

• Manufacturer Part Number: MAX1778EUG+
• Description: IC DCDC CONV MULTI OUT 24TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1778EUG+

• Applications: Converter, TFT, LCD
• Voltage - Input: 2.7 ~ 5.5 V
• Number Of Outputs: 5
• Voltage - Output: 2.7 ~ 13 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
BUF+ = FLTSET = TGND = PGND = GND, T
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
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
SUPL
RIPPLE REJECTION
= V
LDOOUT
I
= 8V, 200mV/div
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