MAX8795AGCJ/V+T Maxim Integrated Products, MAX8795AGCJ/V+T Datasheet - Page 11

• Manufacturer Part Number: MAX8795AGCJ/V+T
• Description: Display Drivers TFT-LCD DC-DC Conver ter with Operational
• Manufacturer: Maxim Integrated Products

Specifications of MAX8795AGCJ/V+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(Circuit of Figure 1, V
1.2500
1.2495
1.2490
1.2485
1.2480
1.2475
1.2470
90
85
80
75
70
1
0
A: V
B: V
C: INDUCTOR CURRENT, 1A/div
STEP-UP REGULATOR SOFT-START
IN
MAIN
REF VOLTAGE LOAD REGULATION
, 5V/div
, 5V/div
10
STEP-UP EFFICIENCY
vs. LOAD CURRENT
LOAD CURRENT (mA)
LOAD CURRENT (μA)
10
(HEAVY LOAD)
IN
20
______________________________________________________________________________________
2ms/div
= 5V, V
30
100
V
V
MAIN
IN
MAIN
= 5V
40
= 13.9V
MAX8795A toc04
= 14V, V
1000
50
A
0V
B
0V
C
0A
GON
TFT-LCD DC-DC Converter with
-0.2
-0.4
-0.6
-0.8
= 25V, V
1.4
1.3
1.2
1.1
1.0
0
2.5
25
GATE-ON REGULATOR LINE REGULATION
A: LOAD CURRENT, 1A/div
B: V
C: INDUCTOR CURRENT, 1A/div
MAIN
STEP-UP REGULATOR PULSED
LOAD-TRANSIENT RESPONSE
3.0
GOFF
, 200mV/div, AC-COUPLED
26
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
3.5
= -10V, T
27
10μs/div
4.0
Operational Amplifiers
Typical Operating Characteristics
28
A
4.5
= +25°C, unless otherwise noted.)
I
POS
29
MAX8795A toc05
= 20mA
5.0
5.5
30
13.9V
A
50mA
0A
B
C
-0.1
-0.3
-0.5
18
15
12
9
6
3
0
TIMER-DELAYED OVERLOAD PROTECTION
GATE-ON REGULATOR LOAD REGULATION
2.5
0
A: V
B: INDUCTOR CURRENT, 1A/div
MAIN
3.0
STEP-UP SUPPLY CURRENT
, 2V/div
vs. SUPPLY VOLTAGE
5
CURRENT INTO INDUCTOR
3.5
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
NO LOAD, SUP DISCONNECTED,
R1 = 221kΩ, R2 = 21.5kΩ
CURRENT INTO IN PIN
4.0
40ms/div
10
4.5
I
BOOST =
5.0
15
MAX8795A toc06
200mA
5.5
20
6.0
11
A
B
0A
0U