Datasheet TMC828, TMC829 (Microchip) - 6

link to page 14
TCM828/TCM829 Note:
Circuit of Figure 5-3, VIN = +5V, C1 = C2 = C3, TA = +25°C, unless otherwise noted.
450 14 V = 5.0V IN 400 V = 4.75V, V = – 4.0V IN OUT 12 350 V = 3.3V IN 300 10 V = 3.15V, V = – 2.5V IN OUT V = 1.5V 250 8 IN 200 V = 1.9V, V = – 1.5V IN OUT 6 150 4 100 PUMP FREQUENCY (kHz) 2 50 OUTPUT VOLTAGE RIPPLE (mVp-p) 0 0 0 5 10 25 20 25 30 35 5 –40 0
°
C 25
°
C 85
°
C CAPACITANCE (µF) TEMPERATURE (
°
C) FIGURE 2-5:
TCM828 – Output Voltage
FIGURE 2-8:
TCM828 – Pump Frequency Ripple vs. Capacitance. vs. Temperature.
300 45 40 V = 5.0V IN 250 V = 4.75V, V = – 4.0V IN OUT 35 V = 3.3V 200 IN 30 V = 3.15V, V = – 2.5V IN OUT 25 150 V = 1.5V IN 20 100 V = 1.9V, V = – 1.5V IN OUT 15 10 50 PUMP FREQUENCY (kHz) 5 OUTPUT VOLTAGE RIPPLE (mVp-p) 0 0 0 5 10 15 20 30 35 –40
°
C 0
°
C 25
°
C 85
°
C CAPACITANCE (µF) TEMPERATURE (
°
C) FIGURE 2-6:
TCM829 – Output Voltage
FIGURE 2-9:
TCM829 – Pump Frequency Ripple vs. Capacitance. vs. Temperature.
p 120 0 100 –1 A) V) V = 2.0V IN 80 –2 TCM829 60 –3 V = 3.3V IN 40 –4 TCM828 V = 5.0V SUPPLY CURRENT (µ OUTPUT VOLTAGE ( IN 20 –5 0 –6 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 10 20 30 40 50 SUPPLY VOLTAGE (V) OUTPUT CURRENT (mA) FIGURE 2-7:
Supply Current vs. Supply
FIGURE 2-10:
Output Voltage vs. Output Voltage. Current. DS21488B-page 6 © 2010 Microchip Technology Inc. Document Outline 1.0 Electrical Characteristics 2.0 Typical Characteristics FIGURE 2-1: Output Resistance vs. Supply Voltage. FIGURE 2-2: Output Resistance vs. Temperature. FIGURE 2-3: TCM828 – Output Current vs. Capacitance. FIGURE 2-4: TCM829 – Output Current vs. Capacitance. FIGURE 2-5: TCM828 – Output Voltage Ripple vs. Capacitance. FIGURE 2-6: TCM829 – Output Voltage Ripple vs. Capacitance. FIGURE 2-7: Supply Current vs. Supply Voltage. FIGURE 2-8: TCM828 – Pump Frequency vs. Temperature. FIGURE 2-9: TCM829 – Pump Frequency vs. Temperature. FIGURE 2-10: Output Voltage vs. Output Current. FIGURE 2-11: Efficiency vs. Output Current. 3.0 Pin Description TABLE 3-1: Pin Function Table 4.0 Detailed Description FIGURE 4-1: Ideal Switched Capacitor Charge Pump. 5.0 APPLICATIONS INFORMATION FIGURE 5-1: Ideal Switched Capacitor Model. FIGURE 5-2: Equivalent Output Resistance. TABLE 5-1: Output Resistance vs. C1 (ESR = 0.1W) TABLE 5-2: Output Voltage Ripple vs. C2 (ESR = 0.1W) IOUT 10mA FIGURE 5-3: Test Circuit. FIGURE 5-4: Cascading TCM828 or TCM829 Devices to Increase Output Voltage. FIGURE 5-5: Paralleling TCM828 or TCM829 Devices to Reduce Output Resistance. FIGURE 5-6: Combined Doubler and Inverter. FIGURE 5-7: High V– Load Current. 6.0 Packaging Information 6.1 Package Marking Information FIGURE 6-1: Component Taping Orientation for 5-Pin SOT-23 (EIAJ SC-74A) Devices. Corporate Office Atlanta Boston Chicago Cleveland Fax: 216-447-0643 Dallas Detroit Kokomo Toronto Fax: 852-2401-3431 Australia - Sydney China - Beijing China - Shanghai India - Bangalore Korea - Daegu Korea - Seoul Singapore Taiwan - Taipei Fax: 43-7242-2244-393 Denmark - Copenhagen France - Paris Germany - Munich Italy - Milan Spain - Madrid UK - Wokingham Worldwide Sales and Service Trademarks Worldwide Sales