MAX1999EEI+T Maxim Integrated Products, MAX1999EEI+T Datasheet - Page 3

• 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
Operating Frequency
On-Time Pulse Width
Minimum Off-Time
Maximum Duty Cycle
INTERNAL REGULATOR AND REFERENCE
LDO5 Output Voltage
LDO5 Short-Circuit Current
LDO5 Undervoltage Lockout
Fault Threshold
LDO5 Bootstrap Switch Threshold
LDO5 Bootstrap
Switch Resistance
LDO3 Output Voltage
LDO3 Short-Circuit Current
LDO3 Bootstrap Switch Threshold
LDO3 Bootstrap Switch
Resistance
REF Output Voltage
REF Load Regulation
REF Sink Current
V+ Operating Supply Current
V+ Standby Supply Current
V+ Shutdown Supply Current
Quiescent Power Consumption
FAULT DETECTION
Overvoltage Trip Threshold
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
PARAMETER
Supply Controllers for Notebook Computers
High-Efficiency, Quad Output, Main Power-
_______________________________________________________________________________________
MAX1777 or MAX1999
(V
MAX1977 or MAX1999
(V
SKIP = REF
MAX1777 or MAX1999
(V
MAX1977 or MAX1999
(V
MAX1777 or MAX1999
(V
MAX1977 or MAX1999
(V
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I
LDO5 = GND
Falling edge of LDO5, hysteresis = 1%
Falling edge of OUT5, rising edge at OUT5 regulation
point
LDO5 to OUT5, V
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I
LDO3 = GND
Falling edge of OUT3, rising edge at OUT3 regulation
point
LDO3 to OUT3, V
No external load
0 < I
REF in regulation
LDO5 switched over to OUT5, 5V SMPS
V+ = 6V to 24V, both SMPSs off, includes I
V+ = 4.5V to 24V
Both SMPSs on, FB3 = FB5 = SKIP = GND, V
3.5V, V
FB3 or FB5 with respect to nominal regulation point
TON
TON
TON
TON
TON
TON
LOAD
= 5V), SKIP = V
= 0), SKIP = V
= 5V)
= 0)
= 5V)
= 0)
OUT5
< 50µA
= 5.3V
OUT5
OUT3
CC
CONDITIONS
CC
= 5V
= 3.2V
5V SMPS
3.3V SMPS
5V SMPS
3.3V SMPS
V
V
V
V
V
V
V
V
A
OUT5
OUT3
OUT5
OUT3
OUT5
OUT3
OUT5
OUT3
= +25°C.)
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
= 5.05V
= 3.33V
LDO5
LDO3
SHDN
OUT3
< 100mA
< 100mA
=
1.895
0.833
0.895
0.475
1.980
4.90
4.43
3.28
2.80
MIN
250
3.7
+8
25
10
2.105
0.925
1.052
0.555
2.000
TYP
5.00
4.56
3.35
2.91
+11
200
300
400
500
300
190
180
150
4.0
1.4
1.5
36
94
91
88
85
25
6
3
CC
2.315
1.017
1.209
0.635
2.020
MAX
5.10
4.69
3.42
3.02
+14
350
250
4.3
3.2
3.5
4.5
10
50
15
, V
SHDN
UNITS
kHz
mW
mA
mA
mV
µA
µA
µA
µA
µs
ns
%
%
= 5V,
Ω
Ω
V
V
V
V
V
V
3