Datasheet

TPS60120, TPS60121, TPS60122, TPS60123, TPS60124, TPS60125
REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP
DC/DC CONVERTERS
SLVS257B – NOVEMBER 1999 – REVISED AUGUST 2000
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at C
I
= 10 µF, C
1F
= C
2F
= 2.2 µF, C
O
= 22 µF, T
C
= –40°C to 85°C, V
I
= 2 V,
V
FB
= V
O
and V
(ENABLE)
= V
I
(unless otherwise noted) (continued)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(PGTRIP)
Power-good trip voltage
TPS60121, TPS60123,
TPS60125
T
C
= 0°C to 70°C
0.86 ×
V
O
0.90 ×
V
O
0.94 ×
V
O
V
V
hys(PG)
Power-good trip voltage
hysteresis
TPS60121, TPS60123,
TPS60125
V
O
ramping negative,
T
CA
= 0°C to 70°C
0.8%
V
O(PG)
Power-good output
voltage low (see Note 2)
TPS60121, TPS60123,
TPS60125
V
O
= 0 V, I
(PG,SINK)
= 1 mA 0.4 V
I
lkg(PG)
Power-good leakage
current
TPS60121, TPS60123,
TPS60125
V
O
= 3.3 V, V
(PG)
= 3.3 V 0.01 0.1 µA
NOTE 2: During start-up the LBO and PG output signal is invalid for the first 500 µs.
PARAMETER MEASUREMENT INFORMATION
IN
IN
LBI
C1+
C1–
ENABLE
PGND GND
OUT
OUT
FB
LBO
C2+
C2–
C
i
10 µF
C2
2.2 µF
C1
2.2 µF
R1
R2
Off/On
R3
TPS6012x
C
o
2 x 10 µF
Used capacitor types:
C
i
: Ceramic, X7R
C
o
: Ceramic, X7R
C1, C2: Ceramic, X7R
Figure 5. Circuit Used For Typical Characteristics Measurements
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
η
Efficiency
vs Output Current (TPS60120, TPS60122, and TPS60124) 6, 7, 8
η
Efficienc
y
vs Input Voltage (TPS60120, TPS60122, and TPS60124)
9, 10, 11
I Supply Current vs Input Voltage 12
V
O
Output Voltage vs Output Current (TPS60120, TPS60122, and TPS60124) 13, 14, 15
V
O
Output Voltage vs Input Voltage (TPS60120, TPS60122, and TPS60124) 16, 17, 18
V
O
Output Voltage Ripple vs Time 19, 20, 21
V
PP
Output Voltage Ripple Amplitude vs Input Voltage 22
f
(OSC)
Oscillator Frequency vs Input Voltage 23
Load Transient Response 24
Line Transient Response 25
V
O
Output Voltage vs Time (Start-Up Timing) 26