MAX764-MAX766 MAXIM [Maxim Integrated Products], MAX764-MAX766 Datasheet
MAX764-MAX766
Related parts for MAX764-MAX766
MAX764-MAX766 Summary of contents
Page 1
... PWM device). The input voltage range 16V. The output volt- age is preset at -5V (MAX764), -12V (MAX765), or -15V (MAX766); it can also be adjusted from -1V to -16V using two external resistors (Dual Mode ...
Page 2
... MAX CONDITIONS MAX76_C/E MAX76_M V+ = 16V, SHDN < 0. 16V, SHDN > 1. 10V, SHDN > 1.6V 3V ≤ V+ ≤ 16V MAX76_C MAX76_E MAX76_M MAX764, -4.8V ≤ V ≤ 5.2V OUT MAX765C/E, -11.52V ≤ V ≤ 12.48V OUT MAX765M, -11.52V ≤ V ≤ 12.48V OUT MAX766, -14.40V ≤ V ≤ -15.60V OUT ...
Page 3
... Note 1: See Maximum Output Current vs. Supply Voltage graph in the Typical Operating Characteristics . Guarantees are based on correlation to switch on-time, switch off-time, on-resistance, and peak current rating. Note 2: Circuit of Figure 2. __________________________________________Typical Operating Characteristics ( -5V +25°C, unless otherwise noted.) OUT A MAX764 EFFICIENCY vs. LOAD CURRENT 100 10V ...
Page 4
Adjustable, High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A MAXIMUM OUTPUT CURRENT vs. SUPPLY VOLTAGE 600 CIRCUIT OF FIGURE 2 500 V = -5V OUT ...
Page 5
High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A LX ON-RESISTANCE vs. TEMPERATURE 2.2 2 (V+) = 10V OUT 1.8 1 ...
Page 6
Adjustable, High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A TIME TO ENTER/EXIT SHUTDOWN 0V 0V 2ms/div CIRCUIT OF FIGURE 5V ...
Page 7
High-Efficiency, Low I ____________________________Typical Operating Characteristics (continued) ( -5V +25°C, unless otherwise noted.) OUT A DISCONTINUOUS CONDUCTION AT HALF CURRENT LIMIT s/div CIRCUIT OF FIGURE 5V ...
Page 8
... The internal P-channel power MOSFET allows peak currents of 0.75A, increasing the output current capability over previous pulse-frequency-modulation (PFM) devices. Figure 1 shows the MAX764/MAX765/ MAX766 block diagram. The MAX764/MAX765/MAX766 offer three main improvements over prior solutions: ...
Page 9
... F 2) turns on again if the output is out of regulation. 20V The MAX764/MAX765/MAX766 limit the peak inductor current, which allows them to run in continuous-con- duction mode and maintain high efficiency with heavy INPUT loads. (See the photo Continuous Conduction at Full VOLTAGE (V) Current Limit in the Typical Operating Characteristics ...
Page 10
... Adjustable, High-Efficiency, Low I Modes of Operation When delivering high output currents, the MAX764/ MAX765/MAX766 operate in continuous-conduction mode. In this mode, current always flows in the induc- tor, and the control circuit adjusts the duty-cycle of the switch on a cycle-by-cycle basis to maintain regulation without exceeding the switch-current capability ...
Page 11
High-Efficiency, Low I Reference Capacitor Bypass REF with a 0.1µF capacitor (C3). The REF out- put can source up to 100µA for external loads. Layout Considerations Proper PC board layout is essential to reduce noise generated by high current levels ...
Page 12
Adjustable, High-Efficiency, Low I _Ordering Information (continued) PART TEMP. RANGE MAX766CPA 0°C to +70°C MAX766CSA 0°C to +70°C MAX766C/D 0°C to +70°C MAX766EPA -40°C to +85°C MAX766ESA -40°C to +85°C MAX766MJA -55°C to +125°C * Dice are tested ...