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MAX1777EEI+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
MAX1777/MAX1977/MAX1999
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
_______________________________________________________________________________________ 7
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12.0.V, ON3 = ON5 = V
CC
, V
SHDN
= 5V,
T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
Clear fault level/SMPS off level 0.8
Delay start level 1.7 2.3ON3, ON5 Input Voltage
SMPS on level 2.4
V
V
PRO
or V
TON
= 0 or 5V -1 +1
V
ON_
= 0 or 5V -1 +1
V
SKIP
= 0 or 5V -2 +2
V
SHDN
= 0 or 24V -1 +1
V
CS_
= 0 or 5V -2 +2
Input Leakage Current
V
ILIM3
, V
ILIM5
= 0 or 2V
-0.2 +0.2
µA
Rising edge 1.2 2.0
SHDN Input Trip Level
Falling edge
0.96 1.04
V
DH_ Gate-Driver On-Resistance BST - LX_ forced to 5V 4.0 Ω
DL_, high state (pullup) 5.0
DL_ Gate-Driver On-Resistance
DL_, low state (pulldown) 1.5
Ω
OUT3, OUT5 Discharge-Mode
On-Resistance
40 Ω
OUT3, OUT5 Discharge-Mode
Synchronous Rectifier
Turn-On Level
0.2 0.4 V
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
MAX1777/MAX1977/MAX1999
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
8 _______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
CC
, SHDN = V+,
R
CS
= 7mΩ, V
ILIM
_ = 0.5V, T
A
= +25°C, unless otherwise noted.)
100
0
0.001 0.01 0.1 1 10
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX1777)
20
MAX1777 toc01
LOAD CURRENT (A)
EFFICIENCY (%)
40
60
80
70
50
30
10
90
A: IDLE MODE, V
IN
= 7V
B: IDLE MODE, V
IN
= 12V
C: IDLE MODE, V
IN
= 24V
D: PWM MODE, V
IN
= 7V
E: PWM MODE, V
IN
= 12V
F: PWM MODE, V
IN
= 24V
A
B
C
D
E
F
100
0
0.001 0.01 0.1 1 10
5V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX1977)
20
MAX1777 toc02
LOAD CURRENT (A)
EFFICIENCY (%)
40
60
80
70
50
30
10
90
A: IDLE MODE, V
IN
= 7V
B: IDLE MODE, V
IN
= 12V
C: IDLE MODE, V
IN
= 24V
D: PWM MODE, V
IN
= 7V
E: PWM MODE, V
IN
= 12V
F: PWM MODE, V
IN
= 24V
A
B
C
D
E
F
100
0
0.001 0.01 0.1 1 10
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX1777)
20
MAX1777 toc03
LOAD CURRENT (A)
EFFICIENCY (%)
40
60
80
70
50
30
10
90
A: IDLE MODE, V
IN
= 7V
B: IDLE MODE, V
IN
= 12V
C: IDLE MODE, V
IN
= 24V
D: PWM MODE, V
IN
= 7V
E: PWM MODE, V
IN
= 12V
F: PWM MODE, V
IN
= 24V
A
B
C
D
E
F
100
0
0.001 0.01 0.1 1 10
3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT (MAX1977)
20
MAX1777 toc04
LOAD CURRENT (A)
EFFICIENCY (%)
40
60
80
70
50
30
10
90
A: IDLE MODE, V
IN
= 7V
B: IDLE MODE, V
IN
= 12V
C: IDLE MODE, V
IN
= 24V
D: PWM MODE, V
IN
= 7V
E: PWM MODE, V
IN
= 12V
F: PWM MODE, V
IN
= 24V
A
B
C
D
E
F
20
26
24
22
30
28
38
36
34
32
40
7
10 13 16 19
22
25
PWM NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX1777 toc05
INPUT VOLTAGE (V)
BATTERY CURRENT (mA)
MAX1977
MAX1777
0.10
0.19
0.16
0.13
0.25
0.22
0.37
0.34
0.31
0.28
0.40
7101316192225
IDLE-MODE NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX1777 toc06
INPUT VOLTAGE (V)
BATTERY CURRENT (mA)
MAX1977
MAX1777
170
176
174
172
180
178
188
186
184
182
190
7101316192225
STANDBY INPUT CURRENT
vs. INPUT VOLTAGE
MAX1777 toc07
INPUT VOLTAGE (V)
STANDBY INPUT CURRENT (µA)
MAX1777
MAX1977
5.0
6.5
6.0
5.5
7.5
7.0
9.5
9.0
8.5
8.0
10.0
7101316192225
SHUTDOWN INPUT CURRENT
vs. INPUT VOLTAGE
MAX1777 toc08
INPUT VOLTAGE (V)
SHUTDOWN INPUT CURRENT (µA)
MAX1977
MAX1777
250
0
0.001 0.01 0.1 1 10
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1777)
50
MAX1777 toc09
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
100
150
200
175
125
75
25
225
PWM MODE
IDLE MODE
V
IN
= 7V
MAX1777/MAX1977/MAX1999
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
CC
, SHDN = V+,
R
CS
= 7mΩ, V
ILIM
_ = 0.5V, T
A
= +25°C, unless otherwise noted.)
400
0
0.001 0.01 0.1 1 10
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1777)
80
MAX1777 toc10
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
160
240
320
280
200
120
40
360
PWM MODE
PFM MODE
V
IN
= 7V
ULTRASONIC MODE
250
0
0.001 0.01 0.1 1 10
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1777)
50
MAX1777 toc11
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
100
150
200
175
125
75
25
225
PWM MODE
PFM MODE
V
IN
= 24V
ULTRASONIC MODE
400
0
0.001 0.01 0.1 1 10
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1777)
80
MAX1777 toc12
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
160
240
320
280
200
120
40
360
PWM MODE
PFM MODE
V
IN
= 24V
ULTRASONIC MODE
500
0
0.001 0.01 0.1 1 10
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1977)
100
MAX1777 toc13
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
200
300
400
350
250
150
50
450
PWM MODE
IDLE MODE
V
IN
= 7V
110
0
100
200
400
300
500
600
0.001 0.01 0.1
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1977)
MAX1777 toc14
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
550
450
350
250
150
50
PWM MODE
PFM MODE
V
IN
= 7V
ULTRASONIC MODE
500
0
0.001 0.01 0.1 1 10
5V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1977)
100
MAX1777 toc15
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
200
300
400
350
250
150
50
450
PWM MODE
PFM MODE
V
IN
= 24V
ULTRASONIC MODE
110
0
100
200
400
300
500
600
0.001 0.01 0.1
3.3V OUTPUT SWITCHING
FREQUENCY vs. LOAD CURRENT (MAX1977)
MAX1777 toc16
LOAD CURRENT (A)
SWITCHING FREQUENCY (kHz)
550
450
350
250
150
50
PWM MODE
IDLE MODE
V
IN
= 24V
ULTRASONIC MODE
5.15
5.05
0.001 0.01 0.1 1 10
OUT5 VOLTAGE REGULATION
vs. LOAD CURRENT
5.07
MAX1777 toc17
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
5.09
5.11
5.13
5.12
5.10
5.08
5.06
5.14
FORCED PWM
IDLE MODE
ULTRASONIC MODE
110
3.330
3.340
3.350
3.370
3.360
3.380
3.390
0.001 0.01 0.1
OUT3 VOLTAGE REGULATION
vs. LOAD CURRENT
MAX1777 toc18
LOAD CURRENT (A)
OUTPUT VOLTAGE (V)
3.385
3.375
3.365
3.355
3.345
3.335
FORCED PWM
IDLE MODE
ULTRASONIC
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

MAX1777EEI+

Mfr. #:
Buy MAX1777EEI+
Manufacturer:
Maxim Integrated
Description:
Switching Controllers Quad-Out Main Power Sply Ctlr for Ntbk
Lifecycle:
New from this manufacturer.
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