Datasheet ICL7660S, ICL7660A (Renesas) - 7

link to page 7 ICL7660S, ICL7660A
Typical Performance Curves
See Figure 12 on page 7, “ICL7660S Test Circuit”) and Figure 13 on page 7 “ICL7660A Test Circuit”
(Continued) V+ = 5V C T 1 = C2 = 1mF A = +25°C ) 400 I = 10mA Ω C1 = C2 = 10mF 300 TANCE ( IS C1 = C2 = 100mF RES 200 UT P OUT 100 0 100 1k 10k 100k OSCILLATOR FREQUENCY (Hz) FIGURE 11. OUTPUT SOURCE RESISTANCE AS A FUNCTION OF OSCILLATOR FREQUENCY
NOTE: 14. These curves include, in the supply current, that current fed directly into the load RL from the V+ (see Figure 12). Thus, approximately half the supply current goes directly to the positive side of the load, and the other half, through the ICL7660S and ICL7660A, goes to the negative side of the load. Ideally, VOUT 2VIN, IS  2IL, so VIN x IS  VOUT x IL.
IS V+ V+ 1 8 (+5V) IS V+ 2 7 1 8 (+5V) ICL7660A I C L 1 + 10µF 3 6 2 7 IL - ICL7660S C + 4 5 1 R 3 6 R L 10µF - L COSC 4 5 -VOUT (NOTE) -VOUT C - 2 - 10µF + C2 10µF +
NOTE: For large values of COSC (>1000pF), the values of C1 and C2 NOTE: For large values of COSC (>1000pF) the values of C1 and C2 should be increased to 100µF. should be increased to 100µF.
FIGURE 12. ICL7660S TEST CIRCUIT FIGURE 13. ICL7660A TEST CIRCUIT
FN3179 Rev 7.01 Page 7 of 14 Feb 10, 2020