MAX1652 Datasheet, PDF (2/28 Pages) Maxim Integrated Products – High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP

High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +36V
GND to PGND .......................................................-0.3V to +0.3V
VL to GND ................................................................-0.3V to +6V
BST to GND ............................................................-0.3V to +36V
DH to LX .....................................................-0.3V to (BST + 0.3V)
LX to BST..................................................................-6V to +0.3V
SHDN to GND...............................................-0.3V to (V+ + 0.3V)
SYNC, SS, REF, SECFB, SKIP, FB to GND...-0.3V to (VL + 0.3V)
DL to PGND ..................................................-0.3V to (VL + 0.3V)
CSH, CSL to GND ....................................................-0.3V to +6V
VL Short Circuit to GND..............................................Momentary
REF Short Circuit to GND ...........................................Continuous
VL Output Current ...............................................+50mA to -1mA
REF Output Current...............................................+5mA to -1mA
Continuous Power Dissipation (T_A = +70°C)
SO (derate 8.70mW/°C above +70°C) .......................696mW
QSOP (derate 8.3mW/°C above +70°C) ....................667mW
Operating Temperature Range
MAX165_E_E ..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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.
ELECTRICAL CHARACTERISTICS
(V+ = +15V, GND = PGND = 0V, SYNC = REF, I_VL = I_REF = 0A, T_A = 0°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP
3.3V AND 5V STEP-DOWN CONTROLLERS
Input Supply Range
4.5
5V Output Voltage (CSL)
0 < (CSH - CSL) < 80mV, FB = VL, 6V < V+ < 30V,
includes line and load regulation
4.85 5.06
3.3V Output Voltage (CSL)
0 < (CSH - CSL) < 80mV, FB = 0V, 4.5V < V+ < 30V,
includes line and load regulation
3.20 3.34
Nominal Adjustable Output
Voltage Range
External resistor divider
MAX1655
1
MAX1652/MAX1653/
MAX1654
2.5
Feedback Voltage
CSH - CSL = 0V, CSL = FB,
SKIP = 0V, 4.5V < V+ < 30V
MAX1655
0.97 1.00
MAX1652/MAX1653/
MAX1654
2.43
2.50
Load Regulation
0 < (CSH - CSL) < 80mV
25mV < (CSH - CSL) < 80mV
Line Regulation
6V < V+ < 30V
Current-Limit Voltage
CSH - CSL, positive
CSH - CSL, negative
SS Source Current
V_SS = 0V
SS Fault Sink Current
V_SS = 4V
FLYBACK/PWM CONTROLLER
SECFB Regulation Setpoint
Falling edge, rising edge, hysteresis = 22mV (MAX1652)
Rising edge, falling edge, hysteresis = 22mV (MAX1654)
INTERNAL REGULATOR AND REFERENCE
VL Output Voltage
SHDN = 2V, 0 < I_VL < 25mA, 5.5V < V+ < 30V
VL Fault Lockout Voltage
Rising edge, falling edge hysteresis = 50mV
VL/CSL Switchover Voltage
Rising edge, falling edge hysteresis = 60mV
2
1.2
0.03
80
100
-50 -100
2.5
4.0
2.0
2.45 2.50
-0.05
0
4.7
5.0
3.8
3.9
4.2
4.5
MAX UNITS
30
V
5.25
V
3.46
V
5.5
V
5.5
1.03
V
2.57
%
0.06 %/V
120
mV
-160
6.5
µA
mA
2.55
V
0.05
5.3
V
4.0
V
4.7
V
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