MAX1889ETE Maxim Integrated Products, MAX1889ETE Datasheet - Page 6

• Manufacturer Part Number: MAX1889ETE
• Description: DC/DC Switching Converters
• Manufacturer: Maxim Integrated Products

Specifications of MAX1889ETE

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

Triple-Output TFT LCD Power Supply
with Fault Protection
6
(Circuit of Figure 1, V
otherwise noted.)
13.1
13.0
12.9
12.8
12.7
12.6
12.5
_______________________________________________________________________________________
A
B
C
STEP-UP REGULATOR OUTPUT VOLTAGE
1
STEP-UP REGULATOR LOAD-TRANSIENT
A: INDUCTOR CURRENT, 1A/div
B: V
C: I
vs. LOAD CURRENT (V
RESPONSE (0 TO 1A, 2µs PULSE)
MAIN
MAIN
= 0 TO 1A, 1A/div
= 9V, 100mV/div, AC-COUPLED
LOAD CURRENT (mA)
10
10µs/div
V
IN
IN
V
IN
= 2.7V
= +3.3V, V
V
= 3.3V
IN
= 5.5V
MAIN
100
= 13V)
MAX1889 toc07
MAIN
1000
= +9V, V
2A
1A
9V
8.9V
8.8V
1A
0
0
1100
1000
Typical Operating Characteristics (continued)
900
800
700
600
500
PL
A
B
C
D
2.5
A: V
B: V
C: V
D: V
= +20V, V
STEP-UP REGULATOR SOFT-START
STEP-UP REGULATOR SWITCHING
FREQUENCY vs. INPUT VOLTAGE
IN
GATE
C2
MAIN
, 5V/div
SLOW-RISING INPUT SUPPLY
3.0
, 5V/div
, 5V/div
= 9V, 5V/div
(10mA LOAD) FROM
3.5
INPUT VOLTAGE (V)
NL
1ms/div
= -7V, SHDN = FREQ = IN, PGND = GND, T
4.0
V
V
I
4.5
MAIN
IN
MAIN
= 3.3V
= 200mA
= 9V
5.0
MAX1889 toc08
5.5
5V
0
5V
0
5V
0
10V
5V
0
A
A
B
C
B
C
D
STEP-UP REGULATOR LOAD-TRANSIENT
A: INDUCTOR CURRENT, 500mA/div
B: V
C: I
A: V
B: V
C: V
D: V
STEP-UP REGULATOR SOFT-START
MAIN
MAIN
IN
GATE
C2
MAIN
, 5V/div
SLOW-RISING INPUT SUPPLY
, 5V/div
, 5V/div
RESPONSE (0 TO 200mA)
= 0 TO 200mA, 200mA/div
= 9V, 100mV/div, AC-COUPLED
= 9V, 5V/div
(200mA LOAD) FROM
10µs/div
1ms/div
A
= +25°C, unless
MAX1889 toc06
MAX1889 toc09
5V
1A
500mA
0
9V
8.9V
200mA
0
0
5V
0
5V
0
10V
5V
0