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參數(shù)資料
| 型號： | TPS60313DGSR |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/22頁 |
| 文件大小： | 421K |
| 代理商： | TPS60313DGSR |
TPS60100
REGULATED 3.3 V 200-mA LOW-NOISE
CHARGE PUMP DC/DC CONVERTER
SLVS213B – MAY 1999 – REVISED SEPTEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
features
Up to 200-mA Output Current
Less Than 5-mV
pp
Output Voltage Ripple
No Inductors Required/Low EMI
Regulated 3.3-V
±
4% Output
Only Four External Components Required
Up to 90% Efficiency
1.8-V to 3.6-V Input Voltage Range
50-
μ
A Quiescent Supply Current
0.05-
μ
A Shutdown Current
Load Isolated in Shutdown
Space-Saving Thermally-Enhanced TSSOP
PowerPAD
Package
Evaluation Module Available
(TPS60100EVM–131)
applications
Replaces DC/DC Converters With Inductors in
– Battery-Powered Applications
– Two Battery Cells to 3.3-V Conversion
– Portable Instruments
– Battery-Powered Microprocessor and
DSP Systems
– Miniature Equipment
– Backup-Battery Boost Converters
– PDAs
– Laptops
– Handheld Instrumentation
– Medical Instruments
– Cordless Phones
description
The TPS60100 step-up, regulated charge pump
generates a 3.3-V
±
4% output voltage from a
1.8-V to 3.6-V input voltage (two alkaline, NiCd, or
NiMH batteries). Output current is 200 mA from a
2-V input. Only four external capacitors are
needed to build a complete low-noise dc/dc
converter. The push-pull operating mode of two
single-ended charge pumps assures the low
output voltage ripple as current is continuously
transferred to the output. From a 2-V input, the
TPS60100 can start into full load with loads as low
as 16
.
The TPS60100 features either constant frequen-
cy mode to minimize noise and output voltage
ripple or the power-saving pulse-skip mode to
extend battery life at light loads. The TPS60100
switching frequency is 300 kHz. The logic
shutdown function reduces the supply current to
1-
μ
A (max) and disconnects the load from the
input. Special current-control circuitry prevents
excessive current from being drawn from the
battery during start-up. This dc/dc converter
requires no inductors and has low EMI. It is
available in the small 20-pin TSSOP PowerPAD
package (PWP).
Copyright
1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments Incorporated.
output voltage ripple
typical operating circuit
Figure 1
3.45
10
3.25
3.3
3.35
3.4
3.05
3.1
3.15
3.2
5
0
1
2
3
4
6
7
8
9
t – Time –
μ
s
–
VO
SKIP =COM = 3V8 = 0 V
VIN = 2.4 V
IO = 200 mA
CO = 22
μ
F
X5R Ceramic
IN
IN
C1+
C1–
ENABLE
PGND GND
OUT
OUT
FB
C2+
C2–
SYNC
SKIP COM 3V8
INPUT
1.8 V to
3.6 V
CIN
10
μ
F
OUTPUT
3.3 V
200 mA
CO
22
μ
F
C2F
2.2
μ
F
C1F
2.2
μ
F
+
OFF/ON
TPS60100
+
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