MAX1977EEI+ Maxim Integrated Products, MAX1977EEI+ Datasheet - Page 2

• Manufacturer Part Number: MAX1977EEI+
• Description: IC CNTRLR PS QUAD HI EFF 28QSOP
• Manufacturer: Maxim Integrated Products

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

ABSOLUTE MAXIMUM RATINGS
V+, SHDN to GND ..................................................-0.3V to +25V
BST_ to GND ..........................................................-0.3V to +30V
LX_ to BST_ ..............................................................-6V to +0.3V
CS_ to GND (MAX1777/MAX1977 only)......................-2V to +6V
V
DH3 to LX3 ..............................................-0.3V to (V
DH5 to LX5 ..............................................-0.3V to (V
ILIM3, ILIM5 to GND...................................-0.3V to (V
DL3, DL5 to GND....................................-0.3V to (V
TON to GND (MAX1999 only)...................................-0.3V to +6V
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
T
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
CC
A
MAIN SMPS CONTROLLERS
V+ Input Voltage Range
3.3V Output Voltage in
Fixed Mode
5V Output Voltage in Fixed Mode
Output Voltage in
Adjustable Mode
Output Voltage Adjust Range
FB3, FB5 Adjustable-Mode
Threshold Voltage
DC Load Regulation
Line Regulation
Current-Limit Threshold
(Positive, Default)
Current-Limit Threshold
(Positive, Adjustable)
Zero-Current Threshold
Current-Limit Threshold
(Negative, Default)
Soft-Start Ramp Time
FB3, FB5, SKIP, PRO, PGOOD to GND ...............-0.3V to +6V
= 0°C to +85°C, unless otherwise noted. Typical values are at T
, LDO5, LDO3, OUT3, OUT5, ON3, ON5, REF,
_______________________________________________________________________________________
PARAMETER
LDO5 in regulation
V+ = LDO5, V
V+ = 6V to 24V, FB3 = GND, V
V+ = 6V to 24V, FB5 = GND, V
MAX1777/MAX1999 (TON = V
V+ = 7V to 24V, FB5 = GND, V
MAX1977/MAX1999 (TON = GND)
V+ = 6V to 24V, either SMPS
Either SMPS
Dual-mode comparator
Either SMPS, V
Either SMPS, SKIP = GND, 0 to 5A
Either SMPS, V
Either SMPS, 6V < V+ < 24V
ILIM_ = V
GND - LX_ (MAX1999)
GND - CS_
(MAX1777/MAX1977),
GND - LX_ (MAX1999)
SKIP = GND, ILIM_ = V
(MAX1777/MAX1977), GND - LX_ (MAX1999)
SKIP = ILIM_ = V
GND - LX_ (MAX1999)
Zero to full limit
CC
, GND - CS_ (MAX1777/MAX1977),
LDO5
OUT5
BST3
BST5
SKIP
SKIP
CC
CC
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
< 4.43V
= 5V, 0 to 5A
= 2V, 0 to 5A
, GND - CS_ (MAX1777/MAX1977),
CONDITIONS
CC
, GND - CS_
V
V
V
A
CC
SKIP
SKIP
SKIP
ILIM_
ILIM_
ILIM_
= +25°C.)
LDO3, LDO5, REF Short Circuit to GND ....................Momentary
LDO3 Current (Internal Regulator) Continuous ..............+100mA
LDO3 Current (Switched Over to OUT3) Continuous.....+200mA
LDO5 Current (Internal Regulator) Continuous ..............+100mA
LDO5 Current (Switched Over to OUT5) Continuous.....+200mA
Continuous Power Dissipation
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
)
28-Pin QSOP (derate 10.8mW/°C above +70°C).........860mW
= 5V
= 5V,
= 5V,
= 0.5V
= 1V
= 2V
3.285
4.975
1.975
MIN
185
4.5
2.0
0.1
93
40
93
6
3.330
5.050
0.005
-120
TYP
2.00
-0.1
-1.5
-1.7
100
100
200
1.7
50
3
CC
3.375
5.125
2.025
MAX
107
107
215
5.5
5.5
0.2
24
60
, V
SHDN
UNITS
%/V
mV
mV
mV
mV
ms
= 5V,
%
V
V
V
V
V
V