MAX1762 Datasheet, PDF (2/20 Pages) Maxim Integrated Products – High-Efficiency, 10-Pin μMAX, Step-Down Controllers for Notebooks

High-Efficiency, 10-Pin µMAX, Step-Down
Controllers for Notebooks
ABSOLUTE MAXIMUM RATINGS
VP, SHDN to GND ..................................................-0.3V to +22V
VP to VL ..................................................................-0.3V to +22V
OUT, VL to GND .......................................................-0.3V to +6V
DL, FB, REF to GND ....................................-0.3V to (VL + 0.3V)
DH to GND....................................................-0.3V to (VP + 0.3V)
CS to GND ....................................................-2.0V to (VP + 0.3V)
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T_A = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
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
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_VP = 15V, VL enabled, C_VL = 1µF, C_REF = 0.1µF, T_A = 0 to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
(Note 1)
PARAMETER
VP Input Voltage Range
VL Input Voltage Range
OUT Output Voltage
(MAX1762, 1.8V Fixed)
OUT Output Voltage
(MAX1762, 2.5V Fixed)
OUT Output Voltage
(MAX1791, 3.3V Fixed)
OUT Output Voltage
(MAX1791, 5V Fixed)
OUT Output Voltage (Adj Mode)
Output Voltage Adjust Range
OUT Input Resistance
FB Input Bias Current
Soft-Start Ramp Time
On-Time (Note 2)
Minimum Off-Time
VL Quiescent Supply Current
VP Quiescent Supply Current
VL Shutdown Supply Current
VP Shutdown Supply Current
VL Output Voltage
SYMBOL
V_VP
V_VL
V_OUT
CONDITIONS
VL (overdriven)
V_VP = 5V to 20V, V_VL = 4.75V to 5.25V,
FB = GND, continuous conduction mode
V_OUT
V_VP = 5V to 20V, V_VL = 4.75V to 5.25V,
FB = VL, continuous conduction mode
V_OUT
V_VP = 5V to 20V, V_VL = 4.75V to 5.25V,
FB = GND, continuous conduction mode
V_OUT
V_VP = 7V to 20V, V_VL = 4.75V to 5.25V,
FB = VL, continuous conduction mode
V_VP = 5V to 20V, V_VL = 4.75V to 5.25V,
FB = OUT, continuous conduction mode
Adjustable-output mode
V_FB = 1.3V
Zero to full I_LIM
t_ON
V_OUT = 1.25V, V_VP = 6V
V_OUT = 5V, V_VP = 6V
t_OFF
(Note 2)
FB = GND, V_VL = 5V, OUT forced above the
regulation point
FB = GND, OUT forced
above the regulation point,
V_VP = 20V
V_VL = float
V_VL = 5V
V_VL = 5V, SHDN = GND
SHDN = GND, measured at VP, V_VL = 0 or 5V
I_LOAD = 0 to 25mA, V_VP = 5V to 20V
MIN
5
4.75
1.773
2.463
3.250
4.925
1.231
0.5
300
-0.1
666
2550
300
4.5
TYP MAX UNITS
20
V
5.25
V
1.8 1.827
V
2.5 2.538
V
3.3 3.350
V
5
5.075
V
1.250 1.269
V
5.5
V
800 1700 kΩ
0.1
µA
1700
µs
740 814
ns
2830 3110
400 500
ns
153 260
µA
227
410
µA
93
200
2
15
µA
4
12
µA
4.65 4.75
V
2 _______________________________________________________________________________________