MAX8758ETG+T Maxim Integrated Products, MAX8758ETG+T Datasheet - Page 6

• Manufacturer Part Number: MAX8758ETG+T
• Description: IC REG STEP UP 24-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8758ETG+T

• Applications: Converter, TFT, LCD
• Voltage - Input: 1.8 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: 5V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Step-Up Regulator with Switch Control
and Operational Amplifier for TFT LCD
(Circuit of Figure 1, V
6
95
90
85
80
75
70
65
60
55
50
50
40
30
20
10
_______________________________________________________________________________________
0
1.5
1
vs. LOAD CURRENT (V
f
L = 4.7µH
STEP-UP REGULATOR EFFICIENCY
OSC
CURRENT INTO IN PIN
2.0
= 1.2MHz
IN QUIESCENT CURRENT
vs. SUPPLY VOLTAGE
2.5
LOAD CURRENT (mA)
10
3.0
STEP-UP REGULATOR HEAVY-LOAD
IN
V
V
IN
IN
3.5
V
= 3.3V, V
= 3.3V
(V)
IN
V
IN
= 5.5V
NOT SWITCHING
V
= 1.8V
4.0
FB
MAIN
100
SOFT-START
- 1.5V
4.5
= 8.5V)
1ms
MAIN
5.0
= 8.5V, FREQ = SHDN = IN, T
1000
5.5
MAX8758 toc07
95
90
85
80
75
70
65
60
55
50
30
29
28
27
26
25
24
-40
1
V
2V/div
V
5V/div
I
500mAV/div
L
IN
MAIN
vs. LOAD CURRENT (V
STEP-UP REGULATOR EFFICIENCY
CURRENT INTO IN PIN
V
-15
IN
IN QUIESCENT CURRENT
= 5.5V
vs. TEMPERATURE
LOAD CURRENT (mA)
TEMPERATURE (°C)
10
V
10
IN
= 3.3V
A
V
= +25°C, unless otherwise noted.)
IN
Typical Operating Characteristics
35
V
NOT SWITCHING
V
= 1.8V
IN
FB
MAIN
100
= 3.3V
- 1.5V
f
L = 10µH
OSC
C
R
C
COMP1
COMP
COMP2
= 8.5V)
= 640kHz
60
L = 4.7µH
= 100kΩ
= 220pF
= 47pF
50mA
1000
85
0
STEP-UP REGULATOR LOAD TRANSIENT
1200
1000
800
600
400
8.6
8.5
8.4
8.3
8.2
8.1
8.0
7.9
1.5
STEP-UP REGULATOR OUTPUT VOLTAGE
1
vs. LOAD CURRENT (V
f
V
I
OSC
MAIN
RESPONSE
IN
FREQ = AGND
20µs/div
= 3.3V
= 1.2Hz
FREQ = V
= 200mA
SWITCHING FREQUENCY
2.5
vs. INPUT VOLTAGE
LOAD CURRENT (mA)
10
IN
V
IN
3.5
(V)
MAX8758 toc08
MAIN
100
4.5
= 8.5V)
V
AC-COUPLED
200mV/div
I
500mA/div
I
1AV/div
MAIN
L
MAIN
1000
5.5