el7532 Intersil Corporation, el7532 Datasheet

Page 1

... Data Sheet Monolithic 2A Step-Down Regulator The EL7532 is a synchronous, integrated FET 2A step-down regulator with internal compensation. It operates with an input voltage range from 2.5V to 5.5V, which accommodates supplies of 3.3V, 5V single Li-Ion battery source. The output can be externally set from 0. divider. The EL7532 features PWM mode control. The operating frequency is typically 1.5MHz. Additional features include a 100ms Power-On-Reset output, < ...

Page 2

... Minimum RSI Pulse Width (Note 2) RSI t Soft-start Time (Note Power On Reset Delay Time (Note 2) POR NOTE: 2. Not production tested. 2 EL7532 = +25°C) Thermal Information Thermal Resistance (Typical) + +0.3V) MSOP10 Package (Note +0.3V) IN Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125° ...

Page 3

... 100k CLOCK 1.5MHz SOFT- START 10µF + BANDGAP – REFERENCE 2. SGND RSI 6 3 EL7532 PIN FUNCTION PWM COMPEN- + SATION - PWM COMPARATOR CONTROL RAMP LOGIC GENERATOR UNDER- VOLTAGE LOCKOUT TEMPERATURE SENSE POR and SGND for variable P-DRIVER LX 1.8µ ...

Page 4

... OUT FIGURE 1. EFFICIENCY vs I OUT 100 MAXIMUM EFFICIENCY, η 0.5 1.0 1.5 I (A) OUT FIGURE 3. EFFICIENCY vs I OUT 1.0 0 0. 3.3V O -0.2 -0.6 -1.0 0 0.5 1.0 1.5 I (A) OUT FIGURE 5. LOAD REGULATION @ V 4 EL7532 1.8V O 2 1.2V O 2.0 2 2.5V IN 2.0 2 100 1. 1. MAXIMUM EFFICIENCY, η = 95% ...

Page 5

... Typical Performance Curves 1.0 0.5 0 -0.5 -1.0 0 0.5 1.0 1.5 I (A) OUT FIGURE 7. LOAD REGULATION @ V 0.5ms/d FIGURE 9. START-UP 1 50ms/d FIGURE 11. POR FUNCTION 5 EL7532 (Continued) Δ 0. 1. ΔV O 2.0 2 (1V/ (0.5A/ (1V/ (2V/ (2V/d) RSI (2V/d) POR (2V/d) 1µs/d FIGURE 8. LOAD REGULATION @ V IN 50ms/d FIGURE 10. START-UP 2 ΔV ...

Page 6

... The output voltage is gradually increased to ensure proper soft-start operation. When the EN pin is connected to a logic low, the EL7532 is in the shut-down mode. All the control circuitry and both MOSFETs are off, and V falls to zero. In this mode, the OUT total input current is less than 1µ ...

Page 7

... V . This O O Thermal Performance The EL7532 fused-lead MSOP10 package. Compared to the regular MSOP10 package, the fused-lead package provides lower thermal resistance. The typical θ (EQ. 4) +115°C/W (See Thermal Information section in spec table) can be improved by maximizing the copper area around the pins. A θ ...

Page 8

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 8 EL7532 MDP0043 A MINI SO PACKAGE FAMILY ...