MAX1999EEI+T Maxim Integrated Products, MAX1999EEI+T Datasheet - Page 5

• Manufacturer Part Number: MAX1999EEI+T
• Description: IC CNTRLR PS QUAD HI EFF 28QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1999EEI+T

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 4
• Voltage - Output: 3.3V, 5V, 2 ~ 5.5 V
• Current - Output: 10A
• Frequency - Switching: 200kHz, 300kHz, 400kHz, 550kHz
• Voltage - Input: 6 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Power - Output: 860mW
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
T
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
T
OUT3, OUT5 Discharge-Mode
On-Resistance
OUT3, OUT5 Discharge-Mode
Synchronous Rectifier
Turn-On Level
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
Current-Limit Threshold
(Positive, Default)
Current-Limit Threshold
(Positive, Adjustable)
On-Time Pulse Width
Minimum Off-Time
INTERNAL REGULATOR AND REFERENCE
LDO5 Output Voltage
LDO5 Undervoltage
Lockout Fault Threshold
A
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
PARAMETER
Supply Controllers for Notebook Computers
High-Efficiency, Quad Output, Main Power-
_______________________________________________________________________________________
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
ILIM_ = V
GND - LX_ (MAX1999)
GND - CS_
(MAX1777/MAX1977),
GND - LX_ (MAX1999)
MAX1777 or MAX1999
(V
MAX1977 or MAX1999
(V
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I
Falling edge of LDO5, hysteresis = 1%
TON
TON
= 5V)
= 0)
CC
, GND - CS_ (MAX1777/MAX1977),
OUT5
< 4.41V
CONDITIONS
CONDITIONS
V
V
V
V
V
V
V
CC
A
SKIP
SKIP
SKIP
ILIM_
ILIM_
ILIM_
OUT5
OUT3
OUT5
OUT3
= +25°C.)
)
= 5V
= 5V,
= 5V,
= 0.5V
= 1V
= 2V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
LDO5
< 100mA
1.895
0.833
0.895
0.475
MIN
MIN
3.27
4.95
1.97
4.90
180
200
0.2
4.5
2.0
0.1
3.7
90
40
90
6
TYP
TYP
0.3
12
CC
CC
2.315
1.017
1.209
0.635
MAX
MAX
3.39
5.15
2.03
5.10
110
110
220
400
0.4
5.5
5.5
0.2
4.3
40
24
60
, V
, V
SHDN
SHDN
UNITS
UNITS
mV
mV
µs
ns
= 5V,
Ω
V
= 5V,
V
V
V
V
V
V
V
V
5