MAX1977EEI+ Maxim Integrated Products, MAX1977EEI+ Datasheet - Page 8
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MAX1977EEI+
Manufacturer Part Number
MAX1977EEI+
Description
IC CNTRLR PS QUAD HI EFF 28QSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1977EEIT.pdf
(32 pages)
Specifications of MAX1977EEI+
Applications
Controller, Notebook Computers
Voltage - Input
4.5 ~ 24 V
Number Of Outputs
4
Voltage - Output
3.3V, 5V, 2 ~ 5.5 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-QSOP
Output Voltage
3.3 V, 2 V to 5.5 V
Input Voltage
6 V to 24 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Case
SSOP
Dc
06+
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