MAX1747EUP Maxim Integrated Products, MAX1747EUP Datasheet - Page 7

• Manufacturer Part Number: MAX1747EUP
• Description: Charge Pumps
• Manufacturer: Maxim Integrated Products

Specifications of MAX1747EUP

• Function: Step Up, Step Down
• Output Voltage: 4.5 V to 5.5 V, +/- 35 V
• Output Current: 200 mA
• Maximum Operating Temperature: + 85 C
• Package / Case: TSSOP-20
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
34
28
22
16
10
2V
4V
2V
4V
2V
4
0
0
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
3
V
ON CONNECTED TO SHDN THROUGH
A 58kΩ RESISTOR
V
V
V
V
OUT
MAXIMUM POSITIVE CHARGE-PUMP
STARTUP WAVEFORM (200mA LOAD)
OUT
NEG
POS
POS(NOMINAL)
= 5V, R
= +5.0V,I
= -7V, I
= +12V, I
_______________________________________________________________________________________
IN
5
= V
RIPPLE WAVEFORM
OUT
NEG
OUT
POS
I
POS
= 32V
= 25Ω (200mA)
SUPM
= 10mA
= 200mA
= 5mA
7
= 1mA
V
400ns/div
I
1ms/div
POS
SUPP
= 10mA
= +3.3V, T
(V)
9
11
MAX1747 toc15
MAX1747 toc17
A
= +25°C, unless otherwise noted.)
13
Typical Operating Characteristics (continued)
V
20mV/div
V
10mV/div
V
10mV/div
V
2V/div
V
2V/div
V
2V/div
OUT
NEG
POS
ON
CXP
OUT
Triple Charge-Pump TFT LCD
200mA
100mA
5.05V
4.95V
-10V
10V
2V
5V
4V
5V
2V
2V
4V
2V
DC-DC Converter
0
0
0
0
0
0
ON CONNECTED TO SHDN THROUGH
A 58kΩ RESISTOR
V
V
R
C
V
ON CONNECTED TO SHDN THROUGH
A 58kΩ RESISTOR
MAIN
IN
OUT
OUT
INTG
= 3.3V, V
STARTUP WAVEFORM (NO LOAD)
= 500Ω TO 25Ω
= 5V, NO LOAD
= 5V, V
= 1500pF
POWER-UP SEQUENCE
OUT
NEG
LOAD TRANSIENT
= 5.0V
= -7V, V
40µs/div
2ms/div
1ms/div
POS
= 12V
MAX1747 toc18
MAX1747 toc14
MAX1747 toc16
V
5V/div
V
10V/div
V
10V/div
V
50mV/div
V
2V/div
I
100mA/div
V
2V/div
V
2V/div
V
2V/div
OUT
ON
MAIN
NEG
POS
OUT
ON
CXP
OUT
7