MAX1637EEE Maxim Integrated Products, MAX1637EEE Datasheet - Page 2

• Manufacturer Part Number: MAX1637EEE
• Description: IC CTRLR MINI LV STPDWN 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1637EEE

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.1 ~ 5.5 V
• Current - Output: 3A
• Frequency - Switching: Adj to 350kHz
• Voltage - Input: 3.15 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 667mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS
GND to PGND .............................................................+2V to -2V
LX, BST to GND......................................................-0.3V to +36V
BST, DH to LX...........................................................-0.3V to +6V
V
DL to GND..................................................-0.3V to (V
REF, SKIP, SYNC, CC to GND ...................-0.3V to (V
REF Output Current.............................................................20mA
Miniature, Low-Voltage,
Precision Step-Down Controller
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
T
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
SMPS CONTROLLER
INTERNAL REFERENCE
OSCILLATOR
Input Voltage Range
Output Voltage
Output Adjustment Range
Current-Limit Threshold
Power Consumption
Shutdown Supply Current
FB Input Current
Soft-Start Ramp Time
Idle-Mode Switchover Threshold
AC Load Regulation
V
V
REF Output Voltage
REF Load Regulation
REF Line Regulation
Oscillator Frequency
Maximum Duty Factor
SYNC Input Pulse Width High
SYNC Input Pulse Width Low
SYNC Input Rise/Fall Time
SYNC Input Frequency Range
CC
A
CC
GG
= +25°C.)
, V
_______________________________________________________________________________________
Undervoltage Lockout Threshold
Undervoltage Lockout Threshold
GG
, CSL, CSH, SHDN to GND.......................-0.3V to +6V
PARAMETER
CC
= V
GG
= 5V, SYNC = V
V
FB tied to V
includes line and load regulation
V
V
CSH > CSL
CSH < CSL
Output not switching
SHDN = GND, V
V
SHDN to full current limit, four levels
CSH - CSL
CSH - CSL = 0mV to CSH - CSL = 100mV
Rising edge, hysteresis = 15mV
Rising edge, hysteresis = 15mV
REF load = 0µA
REF load = 0µA to 50µA
V
SYNC = V
SYNC = GND
SYNC = V
SYNC = GND
(Note 1)
CC
CC
CC
FB
CC
, V
= V
= 5V
= 3.3V
= 3.15V to 5.5V
GG
CC
REF
, I
GG
CC
CC
CC
OUT
REF
+ 0.3V)
+ 0.3V)
, 0mV < (CSH - CSL) < 80mV,
= 0mA, T
CC
CONDITIONS
= V
GG
A
V
V
REF Short-Circuit to GND ..............................................Indefinite
Operating Temperature Range ...........................-40°C to +85°C
Continuous Power Dissipation (T
Storage Temperature Range .............................-65°C to +160°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
= 0°C to +85°C, unless otherwise noted. Typical values are at
CC
CC
QSOP (derate 8.3mW/°C above +70°C) ......................667mW
= V
= V
GG
GG
= 5V
= 3.3V
1.080
1.080
V
V
3.15
-145
2.80
2.80
MIN
270
170
200
200
240
-50
80
20
89
93
REF
REF
A
= +70°C)
1.100
1.100
TYP
-100
100
512
300
200
1.5
0.5
30
92
96
1
2
1.120
1.120
MAX
1.75
3.05
3.05
120
330
230
200
340
-55
5.5
5.5
3.6
2.5
50
40
10
3
3
UNITS
clocks
mW
kHz
kHz
mV
mV
mV
mV
µA
nA
ns
ns
ns
%
%
V
V
V
V
V
V