MAX828EUK ON Semiconductor, MAX828EUK Datasheet - Page 14

• Manufacturer Part Number: MAX828EUK
• Description: IC INVERTER CHARGE PUMP SOT23-5
• Manufacturer: ON Semiconductor
• Type: Switched Capacitor (Charge Pump), Doubler, Invertingr

Specifications of MAX828EUK

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: -1.15 ~ -5.5 V, 2.3 ~ 11 V
• Current - Output: 50mA
• Frequency - Switching: 6kHz ~ 21kHz
• Voltage - Input: 1.15 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Power - Output: 313mW
• Function: Inverting
• Output Voltage: - 5.5 V to - 1.15 V
• Output Current: 100 mA
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MAX828EUKOS

external switch transistors and two Schottky diodes. The output voltage is approximately equal to −V
base emitter drops of both transistors and the forward voltage of both diodes. The performance characteristics for the converter
are shown below. Note that the output resistance is reduced to 0.9 and 1.0 ohms for the 828 and 829 respectively.
The output current capability of the MAX828 and MAX829 can be extended beyond 600 mA with the addition of two
−2.4
−2.6
−2.8
−3.0
−3.2
−2.2
0
Figure 46. Current Boosted Load Regulation,
Output Voltage vs. Output Current MAX828
0.1
I
out
V
, OUTPUT CURRENT (A)
0.2
in
Figure 45. External Switch for Increased Negative Output Current
+
−V
0.3
out
C
3
= V
1
2
3
in
0.4
−V
BE(Q1) −
V
R
T
A
OSC
in
out
Curve
= 25°C
= 5.0 V
= 0.9 W
0.5
A
B
C
D
MAX828, MAX829
V
http://onsemi.com
BE(Q2)
5
4
0.6
V
−2 V
in
5.0
3.0
5.0
3.0
14
(V)
F
−2.4
−2.6
−2.8
−3.0
−3.2
−2.0
−2.2
R
0
Q
Q
out
13.3
17.3
14.4
17.3
2
1
Figure 47. Current Boosted Load Regulation,
C
C
Q
Q
Output Voltage vs. Output Current MAX829
+
(W)
1
3
1
2
C
= C
= 220 mF
= PZT751
= PZT651
1
0.1
2
= 470 mF
I
out
+
, OUTPUT CURRENT (A)
0.2
C
2
−V
0.3
out
in
minus the sum of the
0.4
V
R
T
A
in
out
= 25°C
= 5.0 V
= 1.0 W
0.5
0.6