MAX1999EEI-T Maxim Integrated Products, MAX1999EEI-T Datasheet - Page 8

• 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

High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
8
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
R
CS
100
100
190
188
186
184
182
180
178
176
174
172
170
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
= 7mΩ, V
0.001
0.001
7
MAX1977
MAX1777
A
A
vs. LOAD CURRENT (MAX1777)
vs. LOAD CURRENT (MAX1977)
B
B
10
STANDBY INPUT CURRENT
3.3V OUTPUT EFFICIENCY
5V OUTPUT EFFICIENCY
0.01
0.01
ILIM
vs. INPUT VOLTAGE
C
D
C
INPUT VOLTAGE (V)
13
LOAD CURRENT (A)
LOAD CURRENT (A)
_ = 0.5V, T
D
F
A: IDLE MODE, V
B: IDLE MODE, V
C: IDLE MODE, V
D: PWM MODE, V
E: PWM MODE, V
F: PWM MODE, V
0.1
0.1
16
B: IDLE MODE, V
C: IDLE MODE, V
D: PWM MODE, V
E: PWM MODE, V
F: PWM MODE, V
F
A: IDLE MODE, V
E
E
19
A
= +25°C, unless otherwise noted.)
1
1
IN
IN
IN
IN
IN
IN
22
= 7V
= 12V
= 24V
IN
IN
= 12V
= 24V
IN
IN
= 7V
IN
IN
= 12V
= 24V
= 12V
= 24V
= 7V
= 7V
25
10
10
100
10.0
90
80
70
60
50
40
30
20
10
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
40
38
36
34
32
30
28
26
24
22
20
0
0.001
7
7
PWM NO-LOAD BATTERY CURRENT
MAX1777
A
vs. LOAD CURRENT (MAX1977)
B
SHUTDOWN INPUT CURRENT
10
10
5V OUTPUT EFFICIENCY
0.01
vs. INPUT VOLTAGE
vs. INPUT VOLTAGE
C
D
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
13
13
LOAD CURRENT (A)
MAX1977
MAX1777
MAX1977
A: IDLE MODE, V
B: IDLE MODE, V
C: IDLE MODE, V
D: PWM MODE, V
E: PWM MODE, V
F: PWM MODE, V
16
0.1
16
F
Typical Operating Characteristics
E
19
19
1
22
IN
IN
IN
22
IN
IN
IN
= 7V
= 12V
= 24V
= 12V
= 24V
= 7V
25
25
10
100
250
225
200
175
150
125
100
0.40
0.37
0.34
0.31
0.28
0.25
0.22
0.19
0.16
0.13
0.10
90
80
70
60
50
40
30
20
10
75
50
25
0
0
FREQUENCY vs. LOAD CURRENT (MAX1777)
0.001
0.001
IDLE-MODE NO-LOAD BATTERY CURRENT
7
PWM MODE
A
vs. LOAD CURRENT (MAX1777)
B
10
3.3V OUTPUT EFFICIENCY
0.01
5V OUTPUT SWITCHING
0.01
MAX1777
vs. INPUT VOLTAGE
C
INPUT VOLTAGE (V)
LOAD CURRENT (A)
13
LOAD CURRENT (A)
MAX1977
D
F
0.1
0.1
16
B: IDLE MODE, V
C: IDLE MODE, V
D: PWM MODE, V
E: PWM MODE, V
F: PWM MODE, V
A: IDLE MODE, V
IDLE MODE
CC
E
19
, SHDN = V+,
1
1
V
IN
22
IN
= 7V
IN
IN
IN
IN
IN
= 12V
= 24V
= 12V
= 24V
= 7V
= 7V
25
10
10