MAX1999EEI-T Maxim Integrated Products, MAX1999EEI-T Datasheet - Page 11

• Manufacturer Part Number: MAX1999EEI-T
• Description: DC/DC Switching Controllers
• Manufacturer: Maxim Integrated Products

Specifications of MAX1999EEI-T

• Number Of Outputs: 1
• Output Voltage: 3.3 V, 2 V to 5.5 V
• Output Current: 0.95 A
• Input Voltage: 6 V to 24 V
• Mounting Style: SMD/SMT
• Package / Case: QSOP-28
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5V
4A
1A
5V
0
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
R
MAX1977/MAX1999 (TON = GND)
CS
LOAD TRANSIENT RESPONSE
= 7mΩ, V
5V PWM-MODE
Supply Controllers for Notebook Computers
10µs/div
ILIM
100
100
High-Efficiency, Quad Output, Main Power-
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.001
0.001
_ = 0.5V, T
______________________________________________________________________________________
vs. LOAD CURRENT (TON = V
vs. LOAD CURRENT (TON = V
3.3V ULTRASONIC EFFICIENCY
V
5V ULTRASONIC EFFICIENCY
IN
V
MAX1777 toc28
IN
= 7V
0.01
0.01
= 12V
LOAD CURRENT (A)
LOAD CURRENT (A)
A
V
= +25°C, unless otherwise noted.)
IN
V
AC-
COUPLED
100mV/div
INDUCTOR
CURRENT
2A/div
DL5
5V/div
OUT
= 24V
V
V
0.1
0.1
IN
IN
,
= 12V
= 24V
3.3V
4A
1A
5V
1
0
1
CC
CC
MAX1777/MAX1999 (TON = V
)
)
LOAD TRANSIENT RESPONSE
Typical Operating Characteristics (continued)
10
10
3.3V PWM-MODE
20µs/div
MAX1777 toc29
CC
)
V
AC-
COUPLED
100mV/div
INDUCTOR
CURRENT
2A/div
DL3
5V/div
OUT
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
,
0.001
0.001
vs. LOAD CURRENT (TON = GND)
vs. LOAD CURRENT (TON = GND)
3.3V ULTRASONIC EFFICIENCY
3.3V
5V ULTRASONIC EFFICIENCY
4A
1A
5V
0
0.01
0.01
LOAD CURRENT (A)
LOAD CURRENT (A)
MAX1977/MAX1999 (TON = GND)
V
V
IN
LOAD TRANSIENT RESPONSE
IN
= 12V
= 7V
V
0.1
IN
0.1
3.3V PWM-MODE
= 24V
V
IN
V
10µs/div
IN
= 24V
= 12V
1
1
CC
10
10
, SHDN = V+,
MAX1777 toc30
V
AC-
COUPLED
100mV/div
INDUCTOR
CURRENT
2A/div
DL3
5V/div
OUT
,
11