MAX8734 Maxim Integrated Products, MAX8734 Datasheet - Page 2

• Manufacturer Part Number: MAX8734
• Description: (MAX8732 - MAX8734) Main Power-Supply Controllers
• Manufacturer: Maxim Integrated Products

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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 (MAX8732/MAX8733 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 (MAX8734 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
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
CC
A
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
MAX8732/MAX8734 (TON = V
V+ = 7V to 24V, FB5 = GND, V
MAX8733/MAX8734 (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_ (MAX8734)
GND - CS_
(MAX8732/MAX8733),
GND - LX_ (MAX8734)
SKIP = GND, ILIM_ = V
(MAX8732/MAX8733), GND - LX_ (MAX8734)
SKIP = ILIM_ = V
GND - LX_ (MAX8734)
Zero to full limit
CC
, GND - CS_ (MAX8732/MAX8733),
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_ (MAX8732/MAX8733),
CONDITIONS
CC
, GND - CS_
V
V
V
CC
A
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 (T
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
A
= +70°C)
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